There's 2 things i judge harshly on - the inability to admit when they are wrong, & the lack of courage to say I'm sorry. That tells me all I need to know because we are all wrong at some point, but not all of us are sorry.
Toxic people will hurt you and then try to make you feel bad that you are mad or hurt or upset. It's known as blame shifting. Instead of taking accountability for their own actions, they blame others for having feelings. Abusive people do this