My character suck pls help

Hey guys, i'm trying to beat the game with my own build for the first time, but im getting rolled on at the end of act 3

https://fr.pathofexile.com/account/view-profile/Mordakst/characters?characterName=Mordaks

I dont know if the link is working so tell if you cant see it

I want to make a physical crit melee build, but it feels really weak atm, i've tried to swap the spell around but cant find anything that feel good.. Plus I die really fast too

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https://sites.google.com/view/poefr/personnage/construction/cr%C3%A9er-un-personnage