I'm done

I literally can't do this anymore. Brain fog worse after 3 years like wtf? Is 3 years not enough? Countless relationships destroyed, the best time of my life in university gone hell literally the whole me is gone. After 3 years I still can get worse? Fuck this shit. Wtf am I even doing? The idea of ending it's becoming logical. I don't know what to do. I'm 22 ffs. Does God exist? Fuck man...