How to correctly implement character movement in Unity 3D, taking into account the fact that the surface will not always be flat?

Question

C++ / C#

How to correctly implement character movement in Unity 3D, taking into account the fact that the surface will not always be flat?

I beg you to paint as simply as possible, as if you are explaining quantum physics to a kid;

Answer 1

You push the body, the physics engine does the rest. Everything is elementary.