velocity behaviour - can't make velocity to 0.

Hello there.

I am new to Unity I am trying to do something like minigolf. I have a sphere and there is a statement - if velocity.zero then player can drag-shot again. But after first shot velocity doesn't go down to zero, just zeros and one value is 0.1 or -0.1 e.g (-0.1, 0, 0) or (0, 0, 0.1).

Use Gravity = true is kinematic = false drag = 3 mass = 1

Here's my code if I am doing something wrong:

void FixedUpdate() { Debug.Log(rb.velocity);

     if (rb.velocity == Vector3.zero)
     {
         if (Input.GetMouseButtonDown(0))
         {
             currentpos = Input.mousePosition;
         }
         if (Input.GetMouseButtonUp(0))
         {
             releasepos = Input.mousePosition;
             force = currentpos - releasepos;
             force.z = force.y;
             force.y = 0;
             rb.AddForce(force * speed);
         }
     }
     float velx = rb.velocity.x;
     float vely = rb.velocity.y;
     float velz = rb.velocity.z;
     if ((velx <= maxToStop && velx >= minToStop) && (vely <= maxToStop && vely >= minToStop) && (velz <= maxToStop && velz >= minToStop))
     {
         rb.velocity = Vector3.zero;
         Debug.Log("0");
     } 
 }

}

Looks like the last block of code where I try to force velocity to 0 doesn't make any difference.