Restraining moving area of a draggable UI element

Thanks to @JxWolfe (thank you very much!), I arrived in a solution:

 public class PlayerScript : MonoBehaviour, IDragHandler {
     [SerializeField]
     public Image image;
 
     private float leftLimit;
     private float rightLimit;
     private RectTransform rect;
 
     private void Start() {
         rect = GetComponent<RectTransform>();
     }
 
     public void OnDrag(PointerEventData eventData) {
         Vector2 localPos = Vector2.zero;
         RectTransformUtility.ScreenPointToLocalPointInRectangle(rect, Input.mousePosition, Camera.main, out localPos);                
 
         if (transform.TransformPoint(new Vector2(localPos.x, 0)).x >= leftLimit
                 && transform.TransformPoint(new Vector2(localPos.x, 0)).x <= rightLimit) {
 
             transform.position = transform.TransformPoint(new Vector2(localPos.x, 0));
         }
     }
 }