Me 17M is not sure if i should stay in rls with my kinda gf 17F

For context I'll talk about our past a little.....we have been dating since July 2025....she had a huge crush on me...she used to chase me around nd shi....i also liked her...so we came into a rls.....but it nvr was working right form the start.....we had no communication...no proper talk....stuff happened nd we finally broke up in Oct......her reason for breaking up was she had not yet moved on from her ex........which was a lie😂...she later confessed that she lost interest in me during that time cus i "changed"....i really don't know how....

So yea i stayed with her through monthes....as "just friends"....when we were kindaa in a rls with no responsibility....she could do whatever....seek attention comfort from whomsoever....The phase was really draining....i tried to end things many a times....but I couldn't cus....well i loved her.....she used to guilt trip whenever i used to express myself.... saying stuff like "Everyone hates me"nd shi.... whenever i used to express myself it would always end up with me consoling her....nd yea whenever she felt like I'd leave....she instantly used to pull me close for a few days...then the similar pattern would continue

So this year around February....i decided to end things for good.....she got hint of it again...and started acting clingy giving me EVERY DAMN THING....i evr wanted in a rls....so i decided to stay....but after a few days....the pattern continues....shes rude with me evrynight..... Lately I can't evn sleep through every night....i cry evrynight.....she compares me with her ex and evryone possible...saying things like...'he gave me what u nvr could'.....she blames me evryday....that i just can't communicate...my replies r bad...she says I'm better off single.....i really don't know what to do...evn yesterday i tried breaking up...she guilt tripped me in...and evn said "Noone deserves me.....u r just ungrateful people".....I really don't know what i should do.......