Inclined Plane problem

Hi! So I made a ball that rotates with the help of arrow keys. So my problem is that when my ball is on an inclined plane and if I don’t press any key, instead of falling behind it stands still even though i have applied rigidbody. How do I rectify this?

It can be high friction, drag, isKinematic to true, useGravity to false, Y axis locked…

Nope. Anything else that could be the case? My main camera is attached with the ball if that makes any difference.

Can you post images of theinspector of the ball and plane?
Also, if the camera is parented to the rigidbody, it will rotate with it.