Having a messy room might be the result of a lot of factors. It might mean you are busy and have little time to clean and organize. It might be a sign that you have too much stuff. Or it might be the result of having young kids in the house who are usually not motivated to clean up after themselves.
(VeryWell Mind)

https://www.verywellmind.com/psychology-of-a-messy-room-4171244