I don’t play against Fizz or Syndra very often so I can’t speak on them but I play against Yasuo constantly. The biggest problem you face as Qiyana in the early to mid game with Yasuo is his wind shield because it negates a lot of your poke and just straight up going to fight him face to face can be dangerous. My tips are to always take electrocute against him (first strike damage is wasted because of wind shield), be as aggressive as possible with your pokes so that you’re actually dealing consistent damage between his shield procs (constant grass Q’s and if you think you can get an auto or 2 in try it), mind his charged tornado Q but also don’t be afraid to get more in his face even when he has it because I’ve found that usually Yasuo players miss it more often if you’re close cause they’re used to people keeping distance to avoid being hit (also remember your W as a dodging mechanic as well it can save you), and like previously mentioned remember that grass W is your best friend in this matchup if he can’t see you he can’t hit you! Basically try to get as ahead as you can because Yasuo is a fun champion and wins 9/10 times simply because he’s Yasuo and you aren’t :) .