My mom is driving me crazy

I’m exhausted. My mom always berates me and never backs down. She can go as far as insulting me in the worst way possible over nothing.

She keeps claiming she's the only person in this world who loves me, and that no one else will.

She constantly tells me how she heard yet another person said something bad about me to make me feel depressed.

She openly tells me I will never be able to make it in life without her.

When I was dating my girlfriend, she insisted thing around us as often as possible and always made her a center of attention (she does it all the time). She constantly interferes in me and my girlfriend's relationship, resulting in my girlfriend dumping me. She openly told my girlfriend that, if she wants to marry me, she has to obey her and ignore me. She would berate me in front of my girlfriend and her mom. To this day, she not only feels zero regret about causing our breakup but always teases me about it.

She never accepts responsibility for any of her wrongdoings and always blames everyone else. She also never apologizes.

That's not even the full list of her wrongdoings. I literally feel my energy going dry as I'm typing it.

She and my dad are divorced, and she's been spending years trying to pit me against him to this very day (resulting in my relationship with by dad being strained).

She likes to have an opposite opinion in conversations even if she recently held the same opinion as a person she converses with. She also constantly changes her mind.

She also keeps telling me I'm mentally ill.

Sometimes I'm jealous of other people for having loving moms.