Cursed on Zed in S7

Last year in Season 6, zed was my main man. I always played him through win and loss. He was my highest winrate Champion, but for some reason in this season he is my lowest winrate champion.

I don't know what Riot did with him after the assasin update, but I somehow get fed in my lane and then lose the match due to my entire team feeding or the enemy making a comeback when my team is more boosted than NB3.

I'm starting to hate myself more and more each time i play him this season. I'm a level 7 Zed and in the middle of a match i had a nervous breakdown because of how underwhelming my playstyle was during that match. I have never been on such a losing streak where i know that when i lock in mid and i play zed, that i know i wont win this one or the next 10 matches because of this one loss.

Can someone who is a Zed Main tell me what in the world I am doing wrong when i play him. Ironically this season Vi is my highest winrate champion right now. But still, I need someone to teach me what i need to work on so I can freaking feel good about playing Zed again.

Recently a few hours ago I went afk in a match due to the fact that I was against a malzahar that alwasy narrowly avoided my Q. It was enough to make me rage and then afk for the rest of teh match.

Someone please send help so I can play this game again. And I seriously anyone out there will read this or even care about the predicament I'm in right now. This was a waste of time anyway..................................