Feeling guilty for failed marriage

[MadeinSW3]

Have got three young children and feeling guilty now about failed married. Any tips on how to deal with this?

They don’t understand yet as we are still in the same house but not that often as we are taking turns with childcare.

I feel bad that I didn’t choose a better man for them to grow up in a unit.

Also feel some regret for what my life could have been over last ten years :( its hard to shake now as we are emerging lockdown and I am meeting other NICE men who treat their women properly.

Mines failed due to his low level abuse and expectation that I would put up and shut up.

I feel guilty for marrying him and bringing a child into this
I never intended to have children so I put up with his drinking because I felt I couldn't do any better and didn't deserve to be happy
But now we are divorcing because ds does deserve better
I feel pretty stupid

It didn't help that I got a long phone call from him this afternoon trying to guilt trip me into trying again