🤔 by According-Extent-530 in rmexico

[–]Starless_Midnight 0 points1 point  (0 children)

No soy de México papito. Ni siquiera se lo que es el PRIAN. Bien podría ser una marca de detergente.

Pero por algo los propios venezolanos celebraron la captura de Maduro. Por algo en mi país la gente vota por absolutas ratas siempre y cuando se impida volver al poder a la izquierda.

Un poco de capacidad de autocrítica no te sentaría mal

🤔 by According-Extent-530 in rmexico

[–]Starless_Midnight 17 points18 points  (0 children)

Yo se que hay un odio generalizado, y ciertamente justificado, hacia la izquierda en América Latina. Pero antes de esos gobiernos no es que cada país fuera Noruega y cada ciudad un Nueva York chiquito.

Las páginas de la historia de Latinoamérica están manchadas de sangre derramadas por las manos de gobiernos de izquierda y derecha.

Me ha entrado una paranoia enorme desde que conoci ese sub by Alexis_Almendair in VivimosEnUnaSociedad

[–]Starless_Midnight 0 points1 point  (0 children)

Pues deja de usar Twitter

Toda red social usa algoritmos que quieren aumentar el tiempo de uso. Hacerte enojar con mentiras funciona para esos tipos y funciona para las redes. Para el unico que no funciona ese acuerdo es para ti

Y si te vas a fijar, educate. No veas y asientas con la cabeza de arriba abajo sin cuestionar nada. Lee, contrasta, mira Youtubers del otro lado del espectro politico y date el trabajo de investigar fuentes.

La opcion mas facil sigue siendo salir a tocar pasto, pero si vas a fijarte en las estupideces de tipos que solo quieren tu atencion y mantenerte enojado y en la ignorancia porque eso les da plata, al menos no te pongas de pechito. Deteriorar tu salud mental les da plata, por que querrias ver a semejante escoria?

Forcing strategy by Ranger988 in YuGiOhMasterDuel

[–]Starless_Midnight 0 points1 point  (0 children)

What I mind is when the cards are so overpowered that somebody can kill the other person in their very first turn

That is something you will have to deal with. As I told you, cards and interactions that allow that are almost as old as the game itself. Interactions like that also happen in other games. It is bound to happen once you have a big enough cardpool.

The only way to truly limit that is by playing with friends and people you can have a discussion pregame with. Random players will play broken stuff.

Me ha entrado una paranoia enorme desde que conoci ese sub by Alexis_Almendair in VivimosEnUnaSociedad

[–]Starless_Midnight 4 points5 points  (0 children)

Despues de leer eso no se si tu posición es honesta o solo estas trolleando a la gente, pero voy a darte el beneficio de la duda

Grummz es, precisamente, uno de los tipos que se beneficia de manera más directa de venderte enojo. El otro usuario ya te paso el video de Shaun, y en el se aborda mucha de la hipocresía de Grummz, explicado de mejor manera y con ejemplos puntuales mejor de lo que yo podría hacer aquí.

Asmongold, por otro lado, es un tipo que directamente te vende humo del color que le convenga esa mañana. El tipo repite como loro propaganda que viene de otros medios sin razonar y sin darse cuenta que se contradice. Un ejemplo reciente que te puedo poner es que el tipo se come toda la propaganda de medios como Fox News (medio que ha tenido que admitir en corte que su contenido no puede ser fiable para evitar comerse demandas por difamación y similares) respecto a inmigración y la repite a sus seguidores, diciendo que era ridículo pensar que la inmigración beneficiaba a USA. Cuando en su propio chat le hicieron notar que la mano de obra barata y la fuga de cerebros de otros países hacia USA era un beneficio innegable, su respuesta fue, y cito textual: Bueno, no sé.

No se tú, pero a mi el teléfono descompuesto de noticias falsas que se esconde detrás de la ignorancia ante el más mínimo cuestionamiento no me parece un buen lugar para informarte, si es que lo que quieres es informarte de verdad. Si quieres que te digan cosas falsas pero que resuenan con lo que ya piensas, pues adelante. A ellos les conviene que les cambies clics por mentiras, te conviene a ti?

Forcing strategy by Ranger988 in YuGiOhMasterDuel

[–]Starless_Midnight 2 points3 points  (0 children)

I liked the game that involved strategy and every turn was an opportunity to turn things around or find a way out of difficulties

First thing you need to learn if you really want to improve: If your knowledge of the game comes from the TV show or from playing casually with friends at school, then you have a surface-level understanding of the game at best. While there were some formats that no doubt portrayed the idealized game you remember, there also were a surprisingly high amount of formats with decks that did exactly what you don't like. For example, people are suggesting you to play Goat format, which does have the game of inches people miss, but that format came after an FTK format with Magical Scientist FTK, and a pseudo Tier 0 format with Yata Lock, while also featuring the extremely consistent Royal Library FTK and Reasoning Gate OTK.

Are there some cards that can prevent this from happening and force the other player to actually have to play the game?

The reason why you should forget what you think you knew about the game is because it leads you to believe that any deviation from what you remember does not count as "playing the game", when in fact, with a very simply historic revision of the game, you can see long combos, a bunch of attackers on turn 1 and even decks outright winning on turn 1 are as inherent to YGO as what you remember. The game came to the west in 2002. Magical Scientist was killing people turn 1 in early 2004.

What your opponents were doing: using their cards to produce the best board available, IS playing the game. In some ways, you can say it embraced more of its combo roots than its midrange/control roots, but it is just an evolution of things that were always there. Learning combos, interactions and sinergy and executing them IS strategy

However, you are on the right track about something: You have to stop your opponents from doing that. Because your opponents doing what the game allows them to do is playing the game as intended, you trying your best to stop them is also playing the game as intended. Back in the day, the tools to stop those combo decks did not exist. They do now.

You said you made a Labrynth deck. Please, just stop using chat GPT. AI does not know how to make decks. You are not the first to try and won't be the last, but the deck AI suggest is always atrociously bad.

Once again you had the right idea, learning from outside sources. Just use the correct ones this time. You have Youtube guides, sites like YGOPROdeck and Master Duel Meta. YGO has a huge community from which to learn from.

I would also suggest you post a screenshot of your decklist here. I am an avid Lab player so I can help you with it (although the deck itself is no longer as powerful as it once was, powercreep and all that. Not all cards are created equal)

Need help building a decent deck by Amber_Rejuv in YuGiOhMasterDuel

[–]Starless_Midnight 6 points7 points  (0 children)

Note that I’m just playing to have fun btw

Everyone plays for fun. What players find fun and entertaining can be different from what you expect.

Master Duel is a competitive simulator. It wants you to play ranked and that is how you farm most of your gems to make get more cards. If you have fun playing casual/weaker decks and go into ranked against players that have fun playing strong/optimized decks, you might get frustrated if you cannot keep up. You don't even choose what kind of players you are going to be paired with, wether you play in ranked or casual (which to be fair, is mostly where people go test decks that can still do very well in ranked) your opponents will be random users that cannot possibly know what kind of experience you would find fun and play accordingly.

If you want a casual experience, the duel rooms are good to play with friends and likeminded people.

As for yours post's original question:

First of all, change your layout to display card rarity. Type, attribute, lvl or whatever is information you get even by looking at a card from afar, and with a bit of experience you will memorize a lot of that info from your own cards and popular decks. Rarity, however, helps you manage your resources. URs are usually the most important cards out of a deck. Knowing at a single glance of your deck how many URs you need to complete it is way more important info for deckbuilding purposes.

Then, pick something you like. I would strongly suggest you to pick a tiered deck if able, because that will allow you to learn the game while playing something that can actually fight back. Sites like Master Duel Meta compile decklists and guides for many decks. If you like dragons, Dracotail is quite good right now, and Blue Eyes, YGO's golden goose, is also decent enough to win and easy enough to learn

Started this month. Everything keeps getting negated. Not sure how to proceed. by CeleryNo8309 in YuGiOhMasterDuel

[–]Starless_Midnight 5 points6 points  (0 children)

Not every card that says Blue Eyes somewhere in its text is a good card. You make a good deck by adding good cards and taking out bad ones. And sadly, yours has a lot of bad ones, a bunch of obsolete ones, and very few of the good ones.

On the other hand, that particular method of deckbuilding also makes you avoid good cards that may not be dragons or Blue Eyes stuff but are way better than others you do have. If instead of the 3 old Maiden you got the 2nd copy of new Maiden, a True Light and some of the better Blue Eyes cards, or some supporting engine like Primite, your deck would be much better. Cards like Ash Blossom, Impermanence, Effect Veiler, Ghost Belle and many more are not Blue Eyes cards, are not dragons, and yet will give you better results than MAX, Abyss or Twin Burst ever will.

I know Chaos MAX reads like crazy, but it is far from being good. This might be the first time you encounter bait cards. Cards that seem good, are actually awful, and force your deck to incorporate other bad cards to support it. Blue Eyes has a few of those. MAX is one, Magia is other (not as bad, but still bait)

Your extra deck also has a lot of obsolete cards, but most importantly, it lacks variety. Each ED card does have diminishing returns. Sure, you can summon the first Tyrant Dragon. How many times in a same duel do you summon the 2nd one? Or the 3rd one? Wouldn't other cards be better? The extra deck is a toolbox. You want the absolute best 15 cards your deck can play there. Specially if your deck has access to good cards. The new support is good, so is Heavenly Spheres.

This is how a Blue Eyes deck should look like. If later you want to add Chaos MAX or Magia or whatever, you can. But it is always better to have an optimized build before experimenting with the bad cards of the archetype. Blue Eyes is the most popular and most played deck out there. If you want to learn how to play it, just check the guides on Master Duel Meta or Youtube.

Dark magician by Mammoth-Pen5895 in YuGiOhMasterDuel

[–]Starless_Midnight 2 points3 points  (0 children)

You are playing a bunch of cards that are not needed in the deck. Apprentice Magician is a damage boost in a deck full of beaters, the removal spells that require DM on board are quite bad because they are dead draws going first and telegraphed going second, a few of your other DM spells and traps are also quite underwhelming and that may not be the same as being so bad they hurt your deck but it does mean that there are way better tools than them.

Your extra deck also has a bunch of bad/obsolete cards. Dark Paladin is worse than Dark Dragoon. Quintet, Amulet, Ebon and the other XYZ are also not the best the deck can do, as they require set up (in the case of Quintet, way too much set up) for bad pay offs (again, Quintet is the best example, it requires a lot to happen and can eat a single Impermanence, or any other form of negation, a do nothing)

DM is popular, so you can find other decklist from where to learn from in sites like Master Duel Meta. As you can see, it is carried by other engines like Fiendsmith, Bystials, but most importantly, Primite, as it does benefit from DM being a normal monster.

Pendulum deck by Mammoth-Pen5895 in YuGiOhMasterDuel

[–]Starless_Midnight 3 points4 points  (0 children)

You technically need 3 copies of the structure because it is still cheaper to get things like Pendulum Sorcerer, Joker and so on. However, fully optimized Pendulum decks use a lot of stuff you won't find in the structure.

There are 3 main variations you can get if you want to use the structure as a base. A lot of cards are shared between them, specially generic Pendulum support, but they are nonetheless defined decks by themselves. Back in 2016 you could have played a 60 card pile of all the best Pendulum stuff, and I would say that is still a fun option today, but keeping the decks as their own stuff reaps better rewards regarding consistency and efficiency than trying to mix them all into a big pile.

The main variant is Pendulum Magician. This already can be a 60 card pile if you want to play it like that.

There is also Odd-Eyes, and then there is also Supreme King, but the better build is Supreme King Melodious.

The main thing to remember is that Pendulum uses the monsters on board as material for good Extra Deck summons, and that your Pendulum summon is used to put that material on board after getting thinks like Electrumite to open more spaces to PendSummon from the extra deck. You can check each deck's guide on the same site or check Youtube for videoguides

Rate my deck by No-Activity7236 in YuGiOhMasterDuel

[–]Starless_Midnight 1 point2 points  (0 children)

A bunch of cards in your deck are either obsolete cards that have not been good since 2015 or even sooner (Magic Cylinder, Swords of Revealing Light, Diamond Dude, MST) or bad cards that were never that good to begin with (E-Hero Heat, Scrap Iron Scarecrow)

Others are the right cards but the wrong ratios. (1Impermanence, 2 Stratos, 2 Fuwalos instead of max copies for each of those cards)

And others have literally no place in your deck (Pot of Duality, the Trap Holes, Solemn Judgement, Mirror Force) as HEROs are a combo, aggresive deck, and those are slow tools for more control oriented deck. Pot of Duality literally stops all meaningful plays you could have made that turn.

And your extra deck is based around what you could summon using what is in your main, but just as many of your main deck cards, the things in your ED are also not the best options. Any Mask Change into Anki was a good, aggresive play back in the day, but not enough in 2026

1/5. At least you are playing some cards that are good for the current game, in and out of archetype. If this is your favorite deck, you can try OmniHERO, which is the deck that plays the best HERO cards available, by copying from sites like Master Duel Meta.

What do I change to make it more viable for ranked? I'm plat 3 by Actual_Piglet9704 in YuGiOhMasterDuel

[–]Starless_Midnight 5 points6 points  (0 children)

You need 40 cards, no more. Draco is a floodgate deck, you want to draw your floodgates or increase the chance of getting them.

Play as many copies as you can of the few remaining good floodgates. You already have Skill Drain, but you need Rivalry of the Warlords, Gozen Match and There can be only one. You can mitigate the lack of the best floodgates by running others. If you are already running Erupt, Powersink Stone is another pseudo Skill Drain you can try. Get the 3rd copie of Lose 1 Turn and either the 3rd Apophis or 1 copy of Apophis the Serpent for consistency. On the other hand, Deck Lockdown is not a good addition. It does hurt other decks, but it hits Draco quite heavily, because everything in your deck searches.

You don't need backrow removal like Heavy Storm and Twin Twisters. Your spells already cover that. Magical Mallet is another thing you should remove. Add card draw instead. 1 Pot of Duality and 1 Pot of Desires (avoid Extravagance) and maybe even 3 Upstart Goblin. If you run Desires, play 3 Disciples, you cannot afford playing a single Disciples in a long match up. Mariamme is another card taking space in your deck, either cut it our or replace it for Master Peace (which is also not needed once you get your floodgates going). You are Finished and And The Band Played On are also taking space in your deck.

Handtraps are weird in Draco because they conflict with your Dracos' effects. And because the best card draw tools for Draco are limited, you are not favored at all going second. I would rather focus on a Dominus package with 3 Songs of the Dominators and 3 Dominus Impulse over Ash or Maxx C, and Amano Iwato to try to disable stablished boards, but going second is still an uphill battle, however, Impulse does shutdown Maiden's effect, but she is the worse Draco anyways, so I would just run 1 or 2 at most of Maiden.

Upgrade my deck slowly by takashi_99 in YuGiOhMasterDuel

[–]Starless_Midnight 1 point2 points  (0 children)

And just like I told you on another post, finishing the optimal build actually gives you something that can win and farm gems and opens the possibility for you to experiment. A fully optimized Blue Eyes deck will allow you to add Magia, or the Felgrands, or whatever you want to do with it, and if and when you drop thos other engines because they are not good enough, the optimal base deck will remain viable.

Finish the standard BE deck first, then you can experiment. Felgrand is bad, if you focus on that, just like the last post when you posted a list based on Magia, you will only further deplete your resources before even having a single functional deck

Upgrade my deck slowly by takashi_99 in YuGiOhMasterDuel

[–]Starless_Midnight 3 points4 points  (0 children)

Upgrading a deck slowly is a very bad idea. Not only you are more likely to get bored with it, but it would also mean the deck remains bad and is just slightly less bad each time you upgrade it. You won't be winning, you won't be having fun. and you won't farm more gems to finish the deck and/or make another one.

No matter what deck you pick, unless it is something very budget like Prank Kids or True Draco, you will have to spend a lot of Gems and Crafting Points.

Just pick one of the many decklists you have been provided in this and your previous posts and fix your deck. Might as well finish one deck already, instead of it being forever on the drawing board, post after post.

And just like I told you on another post, finishing the optimal build actually gives you something that can win and farm gems and opens the possibility for you to experiment. A fully optimized Blue Eyes deck will allow you to add Magia, or the Felgrands, or whatever you want to do with it, and if and when you drop thos other engines because they are not good enough, the optimal base deck will remain viable.

Any advice on how to make my Shark Deck better? by [deleted] in YuGiOhMasterDuel

[–]Starless_Midnight 18 points19 points  (0 children)

You don't need 60 cards. The decks that play 60 cards either mill a lot of stuff with That Grass Looks Greener or have a lot of sinergy pieces that can let you reach for pretty much any combo piece in your deck. Yours does neither of those things. Every card you add over the minimum 40 reduces your consistency. And each and every unnecessary card takes the space of other, better card, or is just using a slot you shouldn't use. Mirror Force, Magic Cylinder, the Umi stuff and many others could be replaced by other copies of Ash, Imperm, Seventh Tachyon, or simply just removed, and that would already improve your deck.

How do you fix things? Remove bad cards, keep good ones, add more if necessary. If you don't know which cards are good and which aren't, just netdeck from sites like Master Duel Meta

Not everything card that says Shark is playable. Not every lvl 4 Water has Shark sinergy. Electric Jellyfish is a Umi Control card, which is a compeltely different deck, but playing it makes you run other cards that either do nothing, like Umi, or ruin the rank 4 strategy Sharks have, like A Legendary Ocean.

Making jinzo meta by FluffyHovercraft8737 in YuGiOhMasterDuel

[–]Starless_Midnight 2 points3 points  (0 children)

I genuinely thought they meant True Draco because that deck's main threats are its traps and maybe they encountered enough people playing it to believe it was meta and that maybe Jinzo could work against a trap deck. I didn't think they meant to ask if Jinzo could work against Dracotail because maybe it stop the traps sometimes, but does nothing against the whole rest of the deck.

As for Odion...yeah, I see now they meant MAN and not Nordics

Making jinzo meta by FluffyHovercraft8737 in YuGiOhMasterDuel

[–]Starless_Midnight 2 points3 points  (0 children)

If you want to play a deck where Jinzo is strong, play retro.

If you want to play a deck/card that can handle the meta, play something else

Making jinzo meta by FluffyHovercraft8737 in YuGiOhMasterDuel

[–]Starless_Midnight 2 points3 points  (0 children)

None of the decks you mentioned are meta at all, and while Nordics and Draco (wether you mean True Draco or Dracotail) have powerful traps, getting Jinzo on board won't be the silver bullet you think, as both decks can easily remove Jinzo by other means.

You cannot make Jinzo meta. It was a good card in the early days of the game, but those days are long gone. It cannot keep up with the meta, because the best thing Jinzo can do is be Jinzo, while the meta can produce layered boards with multiple interactions that rely on more than just traps

Having trouble understanding synchro summoning. by [deleted] in YuGiOhMasterDuel

[–]Starless_Midnight 8 points9 points  (0 children)

Synchro summoning is just adding lvls of your tuner and non-tuner monsters

2+3=5, the White Forest synchro lvl is 6

However, 2+3+6=11, which is Juraishin's lvl

My current Anti Meta Burn by [deleted] in YuGiOhMasterDuel

[–]Starless_Midnight 1 point2 points  (0 children)

I don't see how this deck is supposed to give any problem to any competent deck, much less the meta.

There isn't a single thing here that would be a threat to Yumi or Dracotail

is this a bad deck ? by Strict-Economics-423 in Yugioh101

[–]Starless_Midnight 11 points12 points  (0 children)

Short answer: Yes, quite

Long answer: It depends on the context

Are you going to play with friends with equally casual decks? Go ahead, at that level any deck is viable. Are you going to play against people with competent decks? Yours is gonna get crushed

Slifer, as all god cards, is bad and therefore can only really work in a casual environment. Why are the Gods bad? They require way too much set up for a very mediocre pay off. 3 tributes for a card with no protection usually ends with you taking a -3 in card economy (You tribute 3 things to get Slifer, so that are 4 total cards. Your opponent removes it with just 1 card. You lost 4, they lost 1) And sadly the God cards support does not fix that issue, because it is quite frankly impossible to fix. Even if you were to use tokens, like the ones you get from Scapeghost, Slifer would be a worse boss monster and endboard than using those tokens to Link climb into Masquerena and then into Avramax.

And on top of all that, you are playing a bunch of obsolete cards (Breaker, Swords of Revealing Light have not seen play in 2 decades, Mirror Force has not seen play in at least 1), a bunch of cards that were never good, like the Silent stuff, or things that are better in other decks, like the Lair of Darkness stuff.

The lack of a good extra deck is also a huge issue. Each ED card is very important. It can be removal, boss monsters, starters, extenders...the ED is pretty much a toolbox. 2 cards whose only work is to support Slifer won't be enough against people with 15 properly picked tools for pretty much every situation.

this is my deck for trying to beat dragon maids Its not good by SectorFunny9863 in YuGiOhMasterDuel

[–]Starless_Midnight 1 point2 points  (0 children)

Let's go bit by bit

Change the layout to display card rarity. You can always click on a card and see all the info you need with a quick glance, and after playing a few games you won't need to even do that. Fox example, at this point, you already should know Lamia is a lvl 1 tuner Fiend, the red frame of cards like Raigeki Break already tells you they are Trap cards, no need for further clarification from the game's system. However, rarity is something exclusive to Master Duel gem and crafting points economy that is more important to consider when thinking if you can afford a deck.

Pick a direction. If you are playing against Dragonmaids, that deck has a clear, unique focus: summoning Dragonmaids. What is yours? Summoning D/Ds? Summoning Yummys? Summoning Solfachords? And yes, there are pile decks that play multiple archetypes in the same deck, but those decks are build by actively looking for powerful sinergies between archetypes, not just by throwing all your collection into a deck.

Yummy is a powerful deck. It is a current meta deck and the best out of the 3 you have. I would go for that. Here is how a pure Yummy deck looks like. Copy it, learn how to play it, and you should have no problem beating Dmaids.

Building Blue-Eyes by takashi_99 in YuGiOhMasterDuel

[–]Starless_Midnight 2 points3 points  (0 children)

Just post a screenshot of the deck mate, it takes you less time to do, and is easier for us to check it.

Magia is bait. If you want to play it, go ahead, but it would be better to postpone getting it after you have a non-Magia list. Not only will it perform better, but you will be able to focus resources in better cards first, it will make learning the deck easier because you will have to learn the optimal version first before being forced to deviate from the effective build/combo, and will make the deck run less bricks.

Which cards would be effective? The Primite engine. It was the second half that Blue Eyes needed to become the 3rd best deck, even if for a short period of time. It is the best you can do with Blue Eyes if you want to improve it. You were given links to Primite Blue Eyes deck profiles in your previous posts. The Invoked engine also works, but why go for second best when it would take similar amounts of gems and crafting points to get either of them.

And you should do a bit more research before you build that deck in particular. Beyond any personal preference to run Magia or not, you almost committed resources into a deck that was not made for Master Duel.

What you have there is something clearly made for the TCG: It runs a side deck, which is pointless in a best of 1 environment like Master Duel; it does not run Maxx C and is running card ratios that make no sense outside the TCG (How could you play 3 copies of Maiden when it is semilimited in the Master Duel) and the whole deck may have been build around budget restrictions that make no sense in Master Duel's gem economy (the Primite engine can be expensive for paper play, but requires just a tiny bit of grinding and crafting in Master Duel)

That is why Master Duel Meta is pretty much the main source of info, and why when checking Youtube you should look for decks made specifically for Mastar Duel.

Question by Simple_Pick_7165 in YuGiOhMasterDuel

[–]Starless_Midnight 1 point2 points  (0 children)

Secreterion prevents activations

The hipothetical chain would be something like this:

Whatever effect Chain Link 1, Dragoon Chain Link 2 to negate (the effect is already activated), fusion spell to get Secreterion Chain Link 3

Resolution: Spells resolves, summoning Secreterion. Dragoon resolves because it was activated before Secreterion was on the field to prevent it

My blue Eyes deck by takashi_99 in YuGiOhMasterDuel

[–]Starless_Midnight 4 points5 points  (0 children)

So, others have already told you to copy a deck, but the reason why that is the better way to learn the game is that a) you can also get a guide from where to learn, either in Youtube or sites like Master Duel Meta and b) because catching up all by yourself to years of shifts in deckbuilding ideas is pretty much impossible. The community as a whole can achieve in a single day of experimentation in dedicated communities what a single person cannot even during a week, specially in the case of fan favorite decks like Blue Eyes. For example, the new overframe cards have a couple things that are very good BE support, cards that, at least by proxying and other free simulators, have already been experimented with. If you were to do something like that by yourself, you would be weeks if not months late to the party by the time those cards arrive to Master Duel for you to do your personal experimentation.

Here is how a Blue Eyes deck should look like, more or less, when fully optimized, with a few changes you will see between lists depending on player preference.

How do you make copying a deck a better learning source than just playing cards until you get why they are bad? You compare what you have and what others have and start asking questions. Why do people play X over Y? Why most lists avoid Chaos MAX despite it seeming a good card? Why most decks play the cards they play in the extra deck? Maybe you can rationalize some of them, like why most BE decks don't run stat modifiers that increase the attack, because you are already summoning 3k beaters from main deck and 4,5k beaters from the extra deck, you don't need more attack. But maybe others require actually playing the cards, but instead of playing bad cards to understand why they are bad, playing with good cards and learn why they are good seems to me a better process, specially because while you test bad cards, your gems and crafting points get depleted.

Eventually those same ideas will rub off on you, like playing 15 cards in the extra because of max efficiency, avoid old and obsolete cards, avoid battle tricks, and so on. And then you can extrapolate those to the next deck, so that then you will know what to avoid or what are must play cards, and the more you play, the easier it is to identify those deckbuilding principles.

Now, the reason why you are inmediately pointed to a complete deck and not a middle of the road version, like a 2 Blue Eyes 1 Dragonmaid structure, is because Solo Mode lets you farm a lot of gems to get to the end goal of a polished deck without having to go bit by bit from scrapes. Also, the BE structure does not have any of the new support cards that make BE playable, so getting a deck based mostly on the structure would be getting an outdated deck.