My gf disrespects me during arguments , shoul I leave her

18(M)I’ve been in a relationship with my girlfriend(17F) for the past year, though I’ve known her for three years. She loves and admires me deeply, but she often lies to me and disrespects me during arguments. She uses generic insults, calling me things like dumb or insecure. Now that I’ve decided to end the relationship, she’s crying and begging me to stay, promising not to repeat her behavior. However, I’ve already given her several chances, and she hasn’t changed.

TL;DR : my gf disrespects me during arguments should I give her another chance because she's begging me to stay