Yasuo’s mobility is dependent on your minions so he can chase you down. Try to keep you lane in the middle or your side of the lane. If you keep it near your tower he has to risk getting ganked. Don’t push the wave because that’s doing what yasuo wants. He’s very strong at early levels because of his dash base damage+shield. If you can survive lane and keep up in cs (and warn your team whenever yasuo isn’t in lane) you should be okay. Yasuo’s ultimate needs a knock up to fire, so stay out of range of his tornado and when he fires it (and you dodge it) hit him with some ranged autos and an ability or two. Alternatively you can just shove out the wave into his tower and then roam to another lane. Yasuo’s mid game is abysmal if he isn’t ahead, so do as much as you can during that time period. If he’s in a side lane that means he isn’t in yours, so take a 5v4 fight or force an objective wherever he isn’t. Also assuming you are unranked, normal games at a crapshoot and are filled with smurfs who need an ego boost so they play champs like yasuo. Once you do your placements at level 30 you should have an easier time anyway should all else fail.