Hello my regular wind enjoyer. If you are here that means that you are either :

1 - Wind has led you to this temple in order to make your will stronger and blade sharper.

2 - You are just like me, who when facing tough matchup looking for eny usefful information he can find.

3 - You one of the godlike beings who became bored of using OP 0/10 powerspike, and want to have some challenge in this game.

Either way, I hope you will find what you are looking for.I want to share with you my thoughts about this champ. First thing you need to know, that Yasuo is very skill reliant. If you are new to the game, you can start to main him( I did that), but belive me, it will be a long way before you start really enjoy playing him, because in order to shine on him you need to spend A LOT of time, learning his mechanics, tricks and so on. No joking. Right now I have around 1.5 mil master points on him(RIP old mastery). But only from 1.2 mil I started to grasp how to play him good enough and good consistanly.

I always find it's fun to play yasou, but for me it was always hard to be impactful in the game after early phase of the game. During mid game it was still good, but in the late game I always had the feeling that the only way for me to do something it's just ult, use my w, and die, it's good if I can distract or kill someone...So with time I start to feel less joy about my windwalker. But then I saw GRIYAZ's "Late-Game PTA Glass Cannon Build [TOP/MID]". First I was little scared to try this build, because it was smth new to me. But after I gave it a try, damn it felt so good. My thought about this build is: Right now it's game where either you one shot or you get one shoted, and it doesn't matter how much defensive items you will build, so why should I be bothered about me defense if I can just kill anyone. And I want you to check his build in the first place, because what he is talking about, can work too, it's just, that I am not confident in my self enough to pull that off.

In order to utilise yasuo as much as posible you need to understand FUNDANMENTALS.
Before I start. All credits about this goes to the greates piggys of all. ALoisNL.
Okay. The thing is, lvls in the game scale much better then gold, so if you would be able to proper utilise you lvl up timers. You would be able to win even in hard mutch ups and agaisnt strong opponents.

1. Usually you alwasys get lvl 2 from first melee minion of the second way, so if time it perfectly, and bait enemies into last hiting at moment you get your lvl up you can kill your opponent, or make good chunk of his health, so that make your lane much easier. The same thing goes with all levels. SO if you time it so you fight him lvl 4 vs lvl 3, you most of the time will win( if you are much lower on health it might wont help you).

2. Macro. It's good to get kills but you always can get towers, camps and minions, it is safe and stable income, what could be better, realy?(unless you lose to a frog, then it's gg)))

So if your allys start 4 vs 5 fight and lose - farm. If you allys play agressive and get punished for that - farm. If your allys get caught in the jungle or in the river - farm. Because as I sad before, lvls spike you harder then gold. One champ with lvl 15-16 will beat champions below 11-13 lvl, and if you are fx lvl 18 to enemies 12-15, it's would mean you had a lot of gold and items, so it is a win - win scenario. Yes you probably get flaimed for that, but you always should focus at your own gameplay in order to improve. For better understanding go and check his videos and streams, because my fundamentals is not good as his, and his videos are also fun. I am just emerald now, my knowledge not even close as good or deep as his, I am just trying to explain you about main tools in the game, you can easily use to win, and they are not require some top level mechanics.

There are many yasuo mechanics which you can use. But I want you to know the crucial ones for m:

1. EQ+flesh, and his forms, beyblade, keyblade - they will save you a lot, go in practice and train, at least be sure to know how to use eq+flash.

2. Wall dashing. You don't need to know every one of them, I recomend you to learn the one with raptors and walls on mid, both at the top and at the bottom, they are not hard, but can save you.

In order to shine on Yasuo you will need a lot of practice and a lot of knowledge, all of it takes a lot of time. If you are playing normal games, don't be afraid of limit testing, even if you are get stomp, but not recklessly( you shouldn't run at the enemy when you 2 lvls down, and the enemy have more then 1 item lead), it's just part of the process. But If you are playing ranked, it's imortant to learn how to stay calm, because you will find a lot of players who will run down your game just because... or for fun(more often). And if you lost your lane, it's good idea to allow you team to carry you. Usually if your opponent kills you 1-2 times it's most likely you never 1v1 him unless he make a big mistakes. In this case play save, farm where you can and if needed lose minions in order no to die, but try not to lose exp.

There is no much to tell here about.
Watch your own replays, especialy the one, where you get stomped( learn enemies cd, what he's doing, how he's spacing, when you lose opportunity and didn't punish him, and so on.)
Watch another player, and try to understand they thoughts process, they movements.
Thank you for your time, and I hope this build will help you even a little bit.
If you notice any mistakes please tell me.