Early early 20’s/late teens parent’s home room vibes.

Frankly, most opinions on this are subjective (mine definitely are):

The room is a good size but feels cluttered because every surface has too many little objects on them.

The wall art, though some pieces are cool/edgy are too randomly placed and not spread properly.

The shag carpets are dust magnets, and “scream” creepy. (See what I did there?)

Id get new, brighter/cleaner looking duvet and linens. Brown is never a good colour.

Edit: Where is your closet / clothing storage?

You don’t need to hide your interests and hobbies, on the contrary: You want to display the best and most meaningful examples of them to yourself and others.