break the chore of cleaning up into smaller bits. make a goal of taking care of clothes. you can even break that down into smaller ones like 1. going through your old clothes for what you haven't worn in months, wont wear again, doesn't fit anymore, and then get rid of them. 2. picking up all the clothes on the floor (including what got shoved under the bed and has been picking up dust bunys since 2017 and getting them washed, if you don't 100% know it is clean, wash it. 3. get a laundry basket and start putting all dirty clothes in the hamper, that at least gets them off the floor even if the hamper takes up space.
then you could focus on getting everything off of the floor, then everything off of elevated surfaces like a desk or dresser. then organize your closet. then sort out your drawers.
don't worry if when you clean something, something else gets dirty again. things always look worse before they get better. and maybe reward yourself for meeting your goal. good luck