Feeling Disconnected: How to Stop Thinking Everyone Hates Me

I feel just like this right now, and it really hurts. I had a friend group in my middle school years but stuff happened at home for me and I had less time to hangout with friends, so in high school, I grew distant as they did too. Some of them would talk to me at school but for the most part, we are merely acquaintances now. I want to reconnect and make new connections but I can't help but think that most people hate me or find me annoying. I would also like to know how to feel more confident and comfortable with people. And I'm always open to talk ☆