Cutting contact with an ex that did not value or respect you in your relationship

I recently went through a breakup and it was very painful and many of us actually going through that life separation with our ex partner after a breakup , usually we don't really think about this . We don't know if this is going to be long term or for that period only where we both going separate ways.But for some of us, the breakup brought all the bad out that we pulled up with in that relationship with that person.
These are some of the grounds why you should consider removing and cutting certain people from your life , including an ex They continuously broke the trust They repeatedly disrespected you

They have no built a real connection with you like a friendly
They don’t get you
They don’t support you
They keep hurting you
And you do not feel-good connecting with them
We cannot keep certain people that got bad and harmful behavior in our life
Some those behaviors are:

Disrespect
Immaturity
Selfishness

People that do not take accountability for their action---Some people keep hurting you and each time they even brush it off to not be a big deal or they deny that their action can bring issues in your relationship