What do you think is a smarter way to handle this?

So I’m living at my parents house still but I’m 20 so I’m trying to get out ASAP. I share a room with my brother who’s 11 and it’s getting really frustrating. He doesn’t clean the room, do anything to have the room clean like I hate going in there it’s a basically a porta potty quite literally. I work 10 1/2 hours everyday I clean the room and get home and it’s a mess. I’ve told my parents about it and they somehow say either that I’m the one doing it and I’m lying and blaming him or saying he shouldn’t even have to clean up when at his age I was cleaning up most of the house. What’s a smart way to handle this without being led by my frustration instead of my brain?
What do you think is a smarter way to handle this?
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