Try to be friends with other people who look like loners.
I honestly feel comfortable not having many friends at all. Actually, I prefer it. And by not many I mean less than 5 people I occasionally interact with. Though the funny thing is I get like 60+ likes on pictures on Facebook and I don't like any of those people..
Anyways, you are "depressed" that you have no friends? Don't worry so much about what other people think of you. You don't need their approval, the only person that matters is yourself and whatever makes you happy. **** whatever people think of you because it's impossible to meet everyone's approval and expectations.
You're probably just going through a phase but you know, just **** it and do whatever you want.