I can’t stand my life right now

My dad has cancer and it’s only getting worse as time goes on, my mom is as depressed as ever, my girlfriend just broke up with me(along with the fact that she was being very harsh towards me), none of my friends care about me the way that I care about them, and I’m not doing well in school(and I just don’t care anymore, either). ever since I was a teenager(I’m in my 20s now) I’ve always felt that one day, things will get better, and I’ll have something to look forward to eventually. but, things are only getting worse, and I can’t keep doing this anymore. The only reason I continue to do anything with my life is because I don’t want to upset my parents, but I can’t keep going anymore, I feel as though nothing matters, and nothing will ever matter. I haven’t been able to shower or eat in days, and I just feel so alone. I have no one to talk to, and I feel as though I’ll never have someone who cares about me, at least not as intensely as I care about them. I cant even do the things I enjoy anymore, I just feel nothing while doing them, and I’ve been drinking nonstop since thanksgiving day. I feel hopeless, and I’m not strong enough to keep going anymore.

side rant: The way my girlfriend broke up with me was horrible, and honestly, it made me never want to date anyone again. I was always there for her(or at the very least, I tried to be there for her) regardless of what I was going through, but she still ended up casting me aside for no reason. I’m not sure what’s wrong with me, but I haven’t been able to sleep since then, and Ive felt genuinely sick to my stomach since it happened. I hope this all passes soon, I don’t know if I could pretend to be strong anymore.