Why when i set a rigidbody to my player it falls through the ground.
Does your player have a mesh collider?
If so, you need to check “convex” and it should work.
If not, maybe just try to add a different collider.
The object that is used for ground needs to have a colider.Also the player object should have a collider.
does the player also have a collider or is it just the ground because both objects need one