I'm going to move all my stuff out
Are you moving out to a new place?
I am tired of living here. It's toxic.
You don't have to live there anymore if it's toxic, but you should give advance notice to the people you live with. It's polite and the proper thing to do.
I don't want to be polite. I want to treat them like they treated me.
If you don't want to talk to them. You can always leave a note and let them know you are leaving at a certain date.