Learn how to play the objective game?
I've found Yasuo players are phenomenal duelists and terrible strategists - I should know, I was a Yasuo main back in S4. Just start considering macro decisions more, like which towers to focus down or when to group with the team for Epic Monster fights or when to split push or so on. I don't mean to insult in any way with this next statement so excuse me if it's phrased poorly or in that way but, you're probably just thinking in an extremely limited way. You know how to play within the moment, Yasuo's kit is designed to complement that, and there's nothing wrong with that in and of itself. If it becomes all you think of, if you need to justify to us you're good at Yasuo because you spend a lot of time on him but still aren't getting the results you want, it just means your way of thinking is wrong. Back up, either play a simpler champion or don't overcommit to Yasuo's micro mechanics, and figure out not how to win fights, but how to win the game.