shut-up ring after 6.5 years?

i (33F) broke up with the „love of my life“ (35M) after 6.5 years because he kept stringing me along. It‘s been 7 months since i moved out. He kept asking for another chance and told me he would propose but we needed to „reconcile“ first, because it does not feel right to propose in a fight/break-up situation. Stupid me gave him even two chances and he did not even plan proper dates, first time he ghosted me after two dates (explaining me later that he was expecting me to plan the next date) and the second time he only managed to plan two dates in a month (a third one was organized by me). We had an argument because of his lack of effort and him obviously stringing me further along and i eventually cut if off rigorously for the first time, i even blocked him so he would not get access to me to manipulate me into a third chance.

He eventually contacted me a month later saying i was right about everything, we do not need to reconcile first, i was the love of his life and he was stupid and childish and is now ready to commit. he wanted to meet in order to propose. i ignored him. a few weeks later i accidently found an engagement ring when i was back at the appartment to pick something up. i did not react on this either.

it‘s been weeks and i am still ignoring him because i do not know what to do. we had been fighting for over a year now, and it was the worst experience i ever had to go through. i feel like my personality has changed, my philosophy and perspective of life is different now. i do not want to marry anymore in general because i would never ever give a man this power over me again. i also feel like i have become somehow emotionally unavailable, having trust issues and not wanting to engage in a life partnership but rather taking care of myself on my own. i also do not know how to cope with the humiliation, resentment and self-esteem issues that stem from the fact that our families and friends know that i was „not enough“ and he rather put us through this mess instead of just getting married (which he claims he always wanted to do but „not under pressure“).

i would appreciate any advice, thank you so much.