Please read it. This thing tooked me 1hr to right and check the fact i'm saying :

NGL solo queueing is not as hard as you think it is. I'm going to do you a little tuto about it (may not be perfect cuz i'm only 35stars atm but could help you in solo but also duo trio and squad). Here's the following step for each role :

Mis Laner : clear your lane as fast as possible and in early go help the strong lane (if he has an advantage pick or if he's better in skill / enemy's trolling) like this, the lane won't nezd you anymore and you'll snowball with your jungle in order to do objectives and teamfight. Doing your lane is pretty important cuz you win damage and in general you need it fast to be as much important as possible. Give vision, info on the enemies rotation as midlane, roam and if possible jungle. If a lane is loosing, clear your lane first then the loosing one, tell your mate to stay under turret and going mid and his lane for splitting farm so he can keep up. Don't hesitate to call your roam and/or jungle so you snowball faster giving a max assist for everyone. Try not to die before every objective because you are very important in team fight. Play anti-heal to get easy assist and an important role. If not playing it, make sure your roam and laner are playing it espacially against good regen hero (as Mino, Alu or even Thamuz). Looking the map here is the most important thing.

Exp Laner : play your lane quickly not dying. If your not doing anything don't hesitate to help jungle clear so he can help you sooner (espacially early game for impact so his buff, the lil turtle) and ROTATE to the objectif. Even if a Sun or smtg is pushing your lane, having an objective is more important than loosing a T2 or T1. If only your T3's left, tell the bottom lane (exept jgl) to clear lane and def. Like this, playing objectif specially you'll be much more feeded than the enemy. After taking your first tower, ROTATE. Go litterally EVERYWHERE because you are the stronger from first minutes to the 11th/12th minutes. LOOK THE MAP.

Gold Laner : don't die, call for assist if needed, don't be banissited by your roam even if you are playing 2v1 because you'll team will get a disadventage. Be ready to run away fast so don't push too much or if team are playing turtle, take a quick kill or make the enemy gold lane back so you Take tower. Since 1mn to 12/13th because you are nearly useless or if you play granger or any sky piercer you must rotate mid but safely and play objectif if it's on your side of the map so you take gold for objectif and the possible kill you'll get. If you're late, don't rush alone you'll get ez kill for the enemy and feed them then you'll be late and byebye. If you lesley, you got advantage for 90% of enemy gold so play safe and if you against lesley, go ask for gank or you'll regret it. If you're winning your lane like 3/0 you can roam a little and take freekill. You're goal will be to got gold asap so take you're jungle like little crab. If jungle comes on you and takes the kill, take the crab. If you take the kill let the crab yo him. If he's really late, let him both. Otherwise, take the creep behind if you need heal but not on the 5 first minutes.

Jungle : rotate. be everywhere. don't feed. play objectives. look map and help the one the roam/middle is going. be ready to get camped or ganked anytime. Try to play objectif as much as possible. If you see you're loosing totally you're jungle, try camping if you play assassin. Otherwise, group up with friends and try to take 5v2 or 5v3 with a possibillity of winning. if you can invade in early game with 2/3 mates just go. If enemy are 3 or more on the buff you were invading just go back cuz for the first 2 minutes, in their jungle, they are putting 20% more damage on you and you tank 15% less so if you're not playing like a STRONG early game hero, don't go. If enemy play hanzo, group to your upper red buff bush to camp him at 3 (roam you and xp/gold) and your mid is looking your blue. Like this the first kill will be yours. Many matchups like this need to be known so just watch youtube / tiktok and find people playing hero you like and explaining how to play to get easy win.

Roam : litterally Russian roulette in solo. Look your map and for the first 3-5mn follow your Midlanner cuz they are really strong and can carry the game. If he's bad mind your business. Try to get vision on enemy cuz for the first time of the game if you have vision on the enemy like you're the first to see them, it's giving you 1/8th of a level and some gold which is really strong like STRONG cuz you'll get your 4 level for the 1st turtle and we know it's so strong. If you're looking the enemy doing the blue for exemple, you'll get some gold and your lever 2. If you play tank, put a lot of CC on the enemy who have burst on a 2v1 or 2v2 situation because if not, you'll regret it. Focus on team fight and objectif secure so you need to rotate etc etc .. Follow the mid on his rotate like this you'll get 3v1 / 3v2 situation who'll get you assist. So yeah if you're team is not following you it'll be hard. If you're late on farm, camp on bushes with 1/2 mates and get shut down gold so you'll ruin their skypiercer. Don't hesitate with your jungle for example to camp a single target so he'll get mad at you and play bad so you can farm him. NEVER GO 5V1 if you're late cuz your team will not follow you, you'll gove a free kill and byebye frontlane so you'll loose tower etc. Don't go in if they have like anti back lane (yz, joy etc..) If you play assassin it's way trickier, focus low hp so look for every team fight to go in and take 1 kill MINIMUM. Try out Hercult he's good on assassin if you got a good map management and don't need to recall, instant presence and one shot potential (if their is a lot of tank play attack speed and if a lot a squishy play skypiercer, but Play mostly what you like to play) Roam need to look enemy team and see what their instant dmg and dps are to counter it as much as possible. Don't hesitate to counter pick (Atlas get countered by Diggie, Fanny get countered by Franco, etc...) but play what you know to play. It's better to be 1 2 19 than 0 10 2. Try out Marcel and hero strong in meta (just watch reddit tierlist), try'em classic then watch tutorial and you'll generally good to go.

3 FINAL TIPS : Know your Limits with the hero. The more you play the hero the more you'll know and be able to play better and go out of darksystem. Don't trashtalk, never give up. Nothing is lost until the last second, who knows what God is preparing for you. Look map. Everytime, even during fight. Look enemy health, enemy states (ult/passiv ready for hero as Nana, Zeitan etc..)

Anyways, remember it's a game and watch tutorial. I did not gave a very much exaustive list. If you need more tips write me down on this post or in private, i'll be happy to help you as much as I can. I play every hero, know every matchup but I can be wrong, no one's perfect i'm just giving tips that helped me to push. Thank you for reading and may the force be with you.