replace GameObjects in game with other GameObjects using raycast detection.

So i made a mechanic where the player shoots a beam (raycastHit2D) and if it hits a certain object the object switches. at start i wanted to do it smart but... well not so smart lol. basically i wanted the object to switch to another object through a list of objects in order every time its hit by a raycast. didnt know how to do it so i did this:

  public GameObject platform2;
     public GameObject platform1;
 
 public void Switch()
     {
         if (platform1.activeSelf == true)
         {
             platform2.SetActive(true);
             platform1.SetActive(false);
            
         }
         else 
         {
             platform2.SetActive(false);
             platform1.SetActive(true);
             
         }

and its called from the raycast script:

 void UpdateLaser()
     {
         RaycastHit2D hit = Physics2D.Raycast(firePoint.position,firePoint.right);
 
         if (hit)
         {
             lineRenderer.SetPosition(0, firePoint.position);
             lineRenderer.SetPosition(1, hit.point);
             Platform2Handler target = hit.transform.GetComponent<Platform2Handler>();
             if(target != null)
             {
                 
                 target.Switch();
             }
             
 
         }
         else
         {
             lineRenderer.SetPosition(0, firePoint.position);
             lineRenderer.SetPosition(1, firePoint.position + firePoint.right * 100);
         }
 

now the laser works great, the raycast is detecting the object correctly then executing the method target.Switch(); but i have to assign the object in the scene to the plaform1 and platform2 manually and i know can just instantiate a prefab of the object but i am not really worried about it atm but im more interested to know how to store these objects and cycle through them. i tried doing it with list and for loop. but it kept spawning them like crazy. funny thing as i am writing my issue here i keep finding more solutions haha.... well more like using duct tape but it works for my tiny project. any help is much appreciated. :D