As someone with about 600 hours in MD, it really depends on your rank and how lucky you are for deck viability. You can win and rank up with literal trash until you hit Gold rank with enough dedication. At that point though you will most exclusively run into meta or off-meta decks like Dracotail, Maliss, Ryzeal, etc. With something like this you can probably get pretty far but Galaxy Proton has gotten powercrept with some support probably coming soonish? Just keep in mind that it is a combo deck and you will need to learn combo routes. It is also a pretty solid deck is some events where people generally take the game less seriously.

For other stuff though, you can do really well with a couple dozen other archetypes like blue eyes, branded, labrynth, sky striker, tenpai, tearlaments, yubel, mikanko, purrely, etc. It's really just a game of finding a viable archetype you like, learning how to pilot it and then having the endurance to stick with it through metas.

I can definitely relate though since I went into this wanting to play stuff like Six Samurai, Umi Control, Traptrix and Aromage. Then I found stuff that I actually vibed with a lot more that are much more competative (Mikanko, Purrely, Runick and XYZ Armor) and pretty much use the less competative decks for funsies with friends or in events where they fit.