she left me cuz of my poor communication skills

You sound young so i'm basing my reply off of it

Sounds to me like you're going through something called limerence (shitty tik tok buzzword now)

But basically - Limerence is an involuntary psychological state of intense romantic obsession, characterized by intrusive thoughts, a desperate need for reciprocation, and the idealization of another person.

It's hard to navigate relationships like this, it might be best to no longer be friends with her as well.

There will be other girls, especially if you self improve and work on your social skills, if you think you are lacking in that area.

I wish you all the best bro!