I kinda feel fucked up in my head

I'm 18F and I do not feel good about myself I feel like I have very weird personality (annoying for some people) and I look average/good ig idk. I'm constantly overthinking most of the things and I'm pretty much socially isolated I have very less number of friends and that too it gets awkward when we hang out also I hate texting people cause it races up my overthinking mind and I hate it. Most of my friends don't stick around cause they get fed up of me cause I have weird attachment styles and that can easily annoy people. I still talk to two of my childhood friends though. But I mostly don't feel good about myself and I constantly keep thinking that I annoy people and I don't belong anywhere or I don't fit in.idk what do I do?