They sometimes come back. But in the case of avoidants, they're usually just done with it, feeling relief, celebrating their freedom, and moving on pretty quickly. In the sense that they come back, you get back together and things ACTUALLY change and get better— No.
How do I reach a dismissive avoidant ex?
https://www.youtube.com/watch?v=wFHp1O5_ZPI
Do avoidant exes ever come back?
Yep, but you better pray that they don't! You need to focus on YOU and your insecure attachment and not them and their love avoidance. Mine came back and I let him come back in and out for 2.5 years although he would never fully commit to me.