error Cs0120

please help… What do i do??

Assets\script\PlayerController.cs(72,13): error CS0120: An object reference is required for the non-static field, method, or property ‘pointer.Change()’

public class PlayerController : MonoBehaviour
{
private void Update()
{
// left, a = -1, default = 0, rifgt, d = +1
float x = Input.GetAxisRaw(“Horizontal”);

    rigid2D.velocity = new Vector3(x * moveSpeed, rigid2D.velocity.y);

    if (Input.GetAxisRaw("Horizontal") > 0)
    {
        rend.flipX = true;
        pointer.Change();

    }
    else if (Input.GetAxisRaw("Horizontal") < 0)
    {
        rend.flipX = false;
        pointer.fixChange();

    }
}

This is pointer script

public class pointer : MonoBehaviour
{
public void Change()
{
gameObject.transform.position = new Vector3(0.3f, 0, 0);
Debug.Log(“wffe”);
}

public void fixChange()
{
    gameObject.transform.position = new Vector3(-0.3f, 0, 0);
    Debug.Log("03432");
}

}