Am i wrong for moving my brothers stuff out of my room?

Background: We live in a one bedroom apartment with two dens (room with no door), my brother sleeps in a den & has curtains for doors. When we moved, I made it clear that I don’t care if I get the den, but my mom insisted I get the bedroom & my brother never argued.

Now, I’m in university, I moved 2 weeks ago just to find out my brother & mom moved my things out the day after I left. I came home this weekend, excited to be in my home & my room, away from school & INSTEAD my family made me feel even less at-home.

So I moved all of my brothers things back to his room & now my family is really upset like they didn’t just violate my privacy & my trust by doing that.

I understand my brother wants the privacy of a bedroom but why couldn’t he have told me when we first moved? He has money to buy barn doors for it too, but chooses not to.

He thinks that I always get what I want but I just want my own space to come home to. My family is so upset with me but am I wrong for moving my brothers stuff back to his room & telling him I don’t want to change rooms?