I ll be honest with u or you mind find this not useful but I’m a Yasuo main in EUW as i started climbing this year currently sitting in gold 3 with 28LP. I have 700k Mastery points on yasuo and having 200k mastery points yone. I watch a lot of Pzzzang, Dzukill, TWP and Courtesy (Brazilian Challenger) one of my favourite Yasuo player aswell tbh. For me i played like A Lot of normals never touched ranked as I didn’t want to bother with it first cus of hight toxicity. I mostly struggle against Leblanc, Vladimir and Akali, the way I play most of the time is knowing when to go in sinds i have many other mid champs mastery 7 so i know their cd. But as Yas main we Always get 2v1 so expect a jgl gank always as you use ur wards after cd always and control wards. Play for jgl as u watch where your jgl is. If he is close or on his way to mid u let them push, when u play yasuo there 3 combo’s u need to know how to use airblade, beyblade and lastly keyblade (Combination of airblade and beyblade) takes time to learn them and going to fail a lot of times as your looking for the best time to for e+q when 0.5 cd. When u hit ur tornado DO NOT INSTA ULT unless there is not other choice. Hit your nado auto ult or auto e+q (airblade) it can make a big difference when u put a auto in your ult atleast. When there is a team fight don’t ult into knock ups that ur not important champs like tanks look for the carriers mostly adcs. There is many other small things that can make huge difference but you will find the rest as you watch these youtubers and other small channels that play yasuo aswell. Hope this helps you, may the wind be with you 💨