Move on, it's better for your life. You need to think about yourself and being in a relationship where she doesn't value you is only going to affect your life
Seek support from friends and do things that make you happy
I can understand how difficult it gets. But at times we need to accept things and not push ourselves in someone’s life.
Acknowledge your worth and try to distract yourself.
You should give her some time, maybe send her an apology message? Make sure to not imply that you want her to be in the relationship, making peace is the best option if she doesn't want to do anything with you