Controlling ex

My controlling ex girlfriend broke up with me. I didn't realise how controlling/insecure she was till she dumped me.

She screenshot private convos between us when together and showed her friends to make me look toxic.

She kept notes of everything bad I did.

She blamed me for the breakup like she didn't want to breakup but had to.

Insulted me during the breakup and tried to hurt me.

She wouldn't have a conversation about the breakup just got extremely emotional?

Anyone have experience with someone like this? And do they come back to even apologise ?