how to get confident and make friends

I hate the fact that I basically have no friends. I do socialize a bit and I am friendly but I dont technically have friends and can't seem to make any. When I get into it with my brother he loves to bring up the fact that I have no friends and there's no reason for me to have a phone (we were arguing because I pay our phone bill and I'm not even the one with a job right now) and it does make me feel sad. My mom would always say when you get to college that's when u meet your real friends but that hasn't happened. I'm so lonely. I just want to be comfortable, confident, and happy 😞