❔ Clamp on rotation depending on the side facing - Unity2D

public Camera cam;
public GameObject firePoint;

private Vector3 mousePos;
private float mouseAngle;
private Vector3 firePointLookDir;

void update(){
  mousePos = cam.ScreenToWorldPoint(Input.mousePosition);
  mousePos.z = 0f;
  
  firePointLookDir = (mousePos - firePoint.transform.position).normalized;

  if (playerMovement.facingRight)
        {
            mouseAngle = Mathf.Clamp(Mathf.Atan2(firePointLookDir.y, firePointLookDir.x) * Mathf.Rad2Deg, -90, 90);
        }
       else if (playerMovement.facingRight == false)
        {
            mouseAngle = Mathf.Clamp(Mathf.Atan2(firePointLookDir.y, firePointLookDir.x) * Mathf.Rad2Deg, 90, 270); // I tryied differents angles combinaisons here, the 90/270 combinaison is the one doing half the job
        }

  firePoint.transform.eulerAngles = new Vector3(0, 0, mouseAngle);
}