You know what, if no one in this fucking house is going to learn to knock I'm just going to fucking sit naked in my room the entire time I am in my room until they get the fucking point.
Hmm... Well my family seemed to have figured it out once I started closing my door. (The sound trap was from back when I had a bedtime to stay up past) I may not know your struggle but I wish you luck in your fight for what's right!
I know your feel man For whatever reason, the doors in our house don't close right and literally anyone can walk into anyone's room. My own cat barges in on me ALL THE TIME.