Feel too stupid to do anything anymore

As school and work goes on I feel worse and worse about myself

Im struggling to keep up in classes, and my job giving me too many hours certainly isn’t helping, but a couple other people in my class are doing fine with jobs as well. I don’t understand why I can’t keep up like they all are

On top of that, all my friends know how to do math better than I do and talk to me like I’m crazy for not remembering how to do something that was taught before college

I’m getting more and more worried that my life goal is unobtainable because I just can’t grasp anything, and this worry is making me too scared to study, too scared to do the things I enjoy. Too scared to learn new things not even related to school.

My medication isn’t helping anymore, I’m seldom cleaning my apartment these days, and all my thoughts non stop are just ways to kill myself, I’m so exhausted but i can’t take a break.