Hate my job, want to quit

I’m 19 and am a barista at starbucks. I hate it, my store is fucking busy and I don’t get along with anyone on my shifts, not that we bicker or anything, but they are all friends and I am just kinda there. I can’t focus on school or any of my hobbies and I’ve been having more intense panic attacks especially surrounding work. I just want to support myself through school but I’m scared if I quit I won’t be able to. I just dont know what to do, but this fucking sucks