I believe you. People can behave so badly and can be selfish entitled and disrespectful, even the people that are supposed to love us can do and say awful things. You are not alone in being sick of it.

We can never change the way others are. The only thing we can slowly learn to do is learn how to navigate around it and try to find things to do that is rewarding to us. Also learn that when someone behaves badly it’s a reflection of who that person is not you.