How can I get my bullet to shoot the other way when I face left. 2d

And for the bullets:

public class Weapon : MonoBehaviour {

 public Transform firePoint;
 public GameObject bulletPrefab;
 

 // Update is called once per frame
 void Update()
 {
     if (Input.GetButtonDown("Fire1"))
     {
         Shoot();
     }
     
 }

 void Shoot()
 {
     Instantiate(bulletPrefab, firePoint.position, firePoint.rotation);
 }

  
  

}