Why does a 2d object pass through another 2d object?

Question

C++ / C#

Hello.
I need your help.

Please tell me how to make a 2d object collide with another 2d object (you need to make a wall)
In Unity, a 2d object was created with a RigidBody 2d collider and BoxCollider2D, but the object still passes through the other.

If possible, please write in more detail.

Answer 1

If transform.position is used, then you need to replace it with rigidbody.addforce or character controller