I want to drink but I’m 19

Man I really just want a drink I used to drink at my parents house I’d just drink their liquor. But now that I’m in college and I’m stressed I just want to relax once and a while I’m in introvert so I don’t like going to parties nor do I have friends to let me know or go with. I just want to drink in my dorm and relax but I can’t get my hands on alcohol. Can someone help me I also don’t have a car so online is preferable.