Your life, physical and then professional were both threatened. The things you mentioned aren’t little oopsies. These are well beyond normal. You describe being assaulted and abused. Those aren’t suck it up and learn situations. That isn’t a regular kind of problem. You should seek trauma counseling.
Weird to say but yeah you can do unpermitted and subpar repairs with more ease on a property you are sole owner of. Harder to pull that off in a multi owner unit.