I totally agree with all the answers are given above. You should have some rest and clean your thoughts. We all have these homework or other lessons troubles. If you don`t know how to cope with all these stuff, ask for help. Your friends and family is your main support.
By the way, I had math troubles in college too, but I found a tutor who taught me and I received my good marks. As I can see from your post, the biggest troubles you have with English. But is that a problem nowadays? We live in the Era of High technologies and there are a lot of helpers online who can assist with any writing trouble. You can try specialized free tools to improve your grammar, punctuation, spelling an so on (I mean
grammarly,
hemingway,
robotdon). So problems with homework and grades are not those things you shouldn`t worry about! Enjoy your college life now, there won`t be any other chance!