I feel kinda alone.

About a year ago me and my best friend got in a huge fight and haven’t really talked since. She betrayed me and was toxic. Ever since I feel so alone. I have a group of friends but I feel like I’m never the “best friend” if that makes any sense. Everyone else is so close to each other and are always hanging out and I feel like they just associate with me at school. It is honestly the worst feeling and it sucks. It’s like idk what to do about it