Hi, I just finished checking out your game. I really like the cat's sprite and animations :3333
I also liked the walljump a lot, I know how hard it is to implement a movement system from scratch, as one time I tried to recreate Hollow Knight's one and it was really difficult. Also, one little trick, in order to make the player not stick that much to the walls when jumping towards them, you can try to apply a physics material to the collider and adjust it's friction, just make sure is 2D in this case.
Really good job and good luck with it, keep it up! <33333