My girlfriend (18 ) just told me (18 ) she wants to be friends after a year of a very chaotic relationship. What should I do?

We both had a very inconsistent and chaotic relationship in which I displayed a lot of insecurity and initiated many fights with her. She was also responsible for some fights. I want her back and I want to work on things but she isn't willing. How can I work on my insecurities and also what should I be doing in relation to my girlfriend?
My girlfriend (18 ) just told me (18 ) she wants to be friends after a year of a very chaotic relationship. What should I do?
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