14 year old me didn't have any friends. 14 year old me tried desperately to fit in with 'friends' that didn't care. You're already ahead of my past self. If there's one thing I've learned since then is that whoever you are now, whatever state you're in, it won't last forever and it can be changed. You have more power to change yourself and your environment than you think. More practical advice would be to seek out clubs or sports and meet new people. If your friends don't fit you any more, just slowly back out of interactions with them and find better friends, friends that don't make you feel unwanted.
This is great advice, thank you so much. My friends are great, caring people, I'm very lucky to (I hope) have them.
Which is probably why I'm so upset at the thought of them not liking me. I am going to start going to a youth club soon though, hopefully that will help.
"The reason we struggle with insecurity is because we compare our behind-the-scenes with everyone else’s highlight reel." It's great that they are caring people. Judging by what you say, you care too. That means that even if you happen to screw up, you can usually fix it by explaining that you had the right intentions. We all make mistakes.