For the ones who ended things with someone willing to fight for you, do you regret it?

Just curious since we hear a lot from the ones that got dumped but for the ones that decided to end things (for whatever reason) with someone that truly loved you and willing to work things out or stay, do you regret it?

My ex ended things because she thought it was better for us/ she wanted to work on herself/ I deserved better etc..But she couldn’t seem to understand that I was willing to fight for her and stay to work things out but it seems like that wasn’t enough.