Adding force to objects

Unity Engine
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1

I am making a top-down 2d game and I wanted to da the movement by adding force to the player. I gave him a rigidbody and turned off the gravity but I can only control the player when I turn the gravity back on and have the player stand on top of an object. Can someone help me with this?

2

rb2d.AddForce(5,0) will work, you may have the drag at too great a value

3

rigidbody2d.AddForce(Vector2.left * Input.GetAxis(“Horizontal”) * moveSpeed * Time.DeltaTime);
rigidbody2d.AddForce(Vector2.up * Input.GetAxis(“Vertical”) * moveSpeed * Time.DeltaTime);

if anything is backwards then just change .left to .right, or .up to .down