I have no friends

I'm 15 and I have no friends, and the worst thing about this is that I used to have friends but they kicked me out of the friend group. <br>I try my hardest to find new friends or be more talkative and outgoing and be myself. I do my best to be brave enough to talk to people but I just can't. I feel like a piece of trash, and everyone always asks if I'm okay and I just say yeah so I don't hurt them's feelings and make them feel like they're the problem. <br>I don't know how to make new friends and it's really hard to tell if someone likes me or not. I recently found someone that I thought would become my friend and they ended up being a bully... so yeah, just here venting, any advice would be cool :).