Every room has four walls.

My room is dedicated like this:

Northern wall: Desk with laptop. Go here for work/creativity.

Southern wall: My bed is here. Sleep only.

Eastern wall: My worktop is here for cooking.

Western wall: I drag my chair over here when I want to read or watch something.

Floor in the middle: Exercises.

You don't need to have a lot of space to make dedicated spaces. It's more of a mental thing.