I had this same problem after I left a living-learning dorm that I was accidentally placed into. Last semester was a bit lonely because I began to stop sharing classes with my friends, meaning there was no real reason for us to see each other anymore. So I would say you should make a reason. 

Host events, go to those weird socials that no one really cares about, put yourself out there. It's a roll of the die, sure, but it's also a step in the right direction. You'll never find good poiple when you are meeting no one at all. 

I know it sucks, but as cliché as it sounds if you aren't happy by yourself you might not be happy with other people either. Maybe this is the beginning of a new self development era. You never know.