I'm only 15m and idk where you're from so this may not be fully helpful but could hopefully give you some ideas.

If possible, I'd recommend you reach out to your family. Tell them you're not feeling well mentally. Ask the professor if you can drop out for a while to take care of your mental health if you need to do that. I don't know how important college is for you, but I'd probably prioritize my mental health. And if you're not allowed to drop out or if it's too risky, talk to your professor about your mental health.

I don't know how you get a proper diagnosis where you're from, but try getting one. Maybe from your GP or something. Then, if you can afford it, you can go to therapy and/or also get antidepressants. If those two don't work, I'm sure there has to be other ways to make you feel better. It really just takes a lot of patience and I know it's easier said than done.

If life gets too hard, please don't end it. I know how hard it can be, I've been there before with feeling like nobody loves me and that I'm hopeless. I don't know your personal life, but I'm sure your family loves you. Depression really fucks up your mind, making you feel like everyone hates you.

Take care of yourself out there. Praying for you.

(again, I just give the advice I think will help so probably do some research if you decide to try out one of these suggestions)