Here's the thing with yasuo, Laning phase is easy, i'v done it myself, it's a joke he's extremely safe in lane and out trades A LOT of people in lane. The issue is what to once you get out of lane, i don't know because i'm not a yasuo main, i only played 30 games with him to understand why i hate him so much, and it's his laning phase.
Most yasuo's will feed either in lane(cause their flat out bad) or in mid game, cause they don't know what to do. I'm the later, if i play yasuo i'll win lane pretty easily because he has a busted lane phase, but once mid game hit's i'm gonna be useless, then late game hit's and it doesn't matter what happened the rest of the game cause now i'm to strong for everyone in the game.