Yasou, How the hell he still needs a back up after all this?

i made a small Edit (put it in the start) so actually everyone can read it immediately.. -->Edit: im really not mad, or butt hurt, really it was normal game, and i was playing for total fun, not to get a chest, or mastery tokens, or anything but fun! Lol i made this thread so someone might tell me of why he needs more help :). Thanks.

Hey look? he was 0/6/0 i was killing him when im 10% hp and he is 100% hp instantly after he comes back after death. i was doubled of his farm/cs, i remember my score was 8/2/9 at some point of the game, specifically mid game.

My team, all of them were playing decently, never thought one of them were doing poorly, i actually thought im gonna carry it. we almost destroyed their base turrets, only base left to be destroyed.

in 34 minute game, Yasou managed to go from 0/6/0 to 24/11/7 and his farm cs 207 when i closed game at 187 cs. No one of us were over feeding, no one of us played poorly, actually i were playing solo, not with a premades teams (not defending my team for nothing).

Holy moly, i ended the game with 1795 Dmg from Electrocute, while his Conqueror gaved him (somehow) around 6k Dmg (maybe more). Tribble Dmg than my Electrocute did with me, put in mind that, i have had hit 1000x times with Electrocute to get that number, when he only get 1000 Pure dmg per a teamfight.

i think Karma did a good job on giving him shields in teamfight, However? i was still able to combo 1 shot him. And (we) did a mistake late game that costs us the game.

TL:DR: i still cannot believe he is not good enough, what makes him go from 0/6/0 to 24/11/7 when my team truly played well. at least decently. my opinion? his wind wall is too overpowered considered as a skill that can block unlimited dmg in a teamfight, while he is doing huge amount of dmg with lifesteal and critical strikes. Riot i m trying.. but i cannot really understand how the hell he is still needs a back up after all this?

Here is the game im talking about. https://matchhistory.eune.leagueoflegends.com/en/#match-details/EUN1/1979197255/222446626?tab=overview the only one who was feeding in the enemy team were 'Yasou' and he has the most Dmg dealt in game.. Actually i think he needs a full rework, or some nerfs, or if they really can just replace wind wall.