Why have all my friends had relationships except for me?

I don't want to be whining about insignificant things but I feel like it's become less about actually being in a relationship and more about how I see myself. I'm not trying to be all egotistical, but I know I'm not unattractive, plain and simple. I'm insecure as hell like the majority of young girls, but know I'm an objectively good looking teen (still sounds egotistical but i just don't want to put this on looks) I struggle to talk to boys, platonically or romantically. like any boy, I freeze up and am completely awkward... no clue why. I think it's deeply rooted in my insecurities despite not being attracted to them. I don't have any boys in my life apart from family, so cant really have that friends to lovers arc sadly. I've spoken to a couple guys online but it always ends in them ghosting me, and it happened a lot so my brains made a pattern that it's my fault, so now the idea of a guy even being interested in me sounds stupid. All my friends have been in long relationships and multiple of them, so at group hangouts when they're talking about past experiences, I feel so behind and I just sit there thinking why can't I have any of this?? Sorry this is so long it's just so annoying because I'm such a hopeless romantic, I've read 78 books this year that are all romance which doesn't help with my lack of romantic experiences lol.