Are you really seeking advice or do you want affirmation to transfer?
If you really want advice I would suggest what the previous posters have indicated above^ AND advise the following:
Quit getting drunk!
Either you did something stupid, while drunk, or they did something stupid while drunk. So stop! You are there to get an education. If you can’t handle the liquor, then don’t do it.
Keep yourself busy:
Go to tutoring, volunteer, find a part-time job. If you keep yourself busy, you won’t have TIME to be by yourself and you will meet like-minded individuals. You already have a group of people you eat lunch with so stick to that. No one says these people will be lifelong friends, but they can be acquaintances.
Newsflash: you aren’t taking advantage of the “college experience” because you keep going home. If you really wanted the college experience you wouldn’t be going home to set yourself up to cry.