Do Avoidant Ex's usually talk bad about their partners during the breakup to help themselves separate?

Just curious when a fearful avoidant ex recently breaks up with someone I know they get "separation elation" where they are relived and are happier.
Is it also common for them to tell their friends how much they are doing better. My ex was telling mutual friends how she is so much happier without me and now it has me second guessing if I was so bad to her or if this is just a common part of their process in gaining back their independence.

For some context we were together for 4 years and even during the breakup weekend while we were away she would say how she is happy to move on and forget about me but then try to hug my arm in the car and initiate intimacy