I can confirm 100% that he is abusing you. He is abusing you because he is damaged emotionally and it makes him feel better to abuse you.
It doesn't matter what you do, or say, or try you can not change him or 'make' him be nicer to you. He doesn't want to be nicer to you because he enjoys being nasty. He is mentally damaged and twisted.
He has created the rules of this sick game, and the rules are that you HAVE to be in the wrong. Always. That way he can enjoy being in the right. He isn't in the right of course. He is a certifiable psycho whose perception of 'reality' is nothing like most other people's.
Every time you play his sick little game and try to 'please' him, he will just move the goal posts to ensure you cannot win. He doesn't want you to win and he doesn't want you to 'please' him in any normal, healthy conventional way.
The only way you can 'please' him is by showing that you're anxious and confused and still prepared to agree to whatever he wants, no matter how demeaning. Only that can please him. Because he is damaged beyond repair and doesn't even care that he's damaged because he enjoys being this bastard far too much.
He has targeted you as his victim. Put him in the same room as any other poster on this thread and we'd laugh ourselves silly at his pathetic antics. We really would.
You need to cut contact. If you can't do it for yourself then do it for your child. Please.