2d Platformer help

I am making a 2d platformer, i changed the view so you see my character in a 3rd person view, but i can still move my mouse up and down y and x.
How do i do so i can’t use my mouse?
I tried changing all the mouse look options to 0 in First person controller - Main Camera.
Please help!

I made a game once where you are controlling an apple, with 2d platform view, i just can’t remember what i did