Topic: Roommate hijacked my PS4

My roommate set himself up on my PS4 with his PlayStation Network account and set as his primary device. I cannot delete his user profile without logging into his account and he is not cooperating. Is there any way of deleting him without doing a factory reset and losing my saved games?
Thanks!

Damn , y'all lived in an airplane or a private jet ? what a life .

It being his primary console doesn't prevent it from being your primary console too... All it does really is letting other users of the console (i.e. you) play games he owns.
What am I missing?

I have to enter a password to even get on my PS4 and PS5.
That way, when I'm not at home, nobody can access them.

Ah thank you. Solution is so simple and right in front of me.