Different random number - Same script - Different cloned object

I would like to obtain a random movement of the objects which are spawned at the Start. This code makes all the objects move towards the same destination. Any ideas of how to fix this without rewriting the entire movement script?? Thank you in advance.

public class Patrol : MonoBehaviour {

 public float speed;
 private float waitTime;
 public float startWaitTime;

 private Transform moveSpot;
 public float minX;
 public float maxX;
 public float minZ;
 public float maxZ;
 private GameObject PlatformCenter;
 

 void Start()
 {
     PlatformCenter = GameObject.FindGameObjectWithTag("PlatformCenter");
     waitTime = startWaitTime;
     moveSpot = PlatformCenter.GetComponent<Transform>();

     moveSpot.position = new Vector3(Random.Range(minX, maxX), 1.083333f, Random.Range(minZ, maxZ));

 }

 void Update()
 {
     transform.position = Vector3.MoveTowards(transform.position, moveSpot.position, speed * Time.deltaTime);

     if (Vector3.Distance(transform.position, moveSpot.position) < 0.2f)
     {
         if (waitTime <= 0)
         {
             moveSpot.position = new Vector3(Random.Range(minX, maxX), 1.083333f, Random.Range(minZ, maxZ));
             waitTime = startWaitTime;
         }
         else
         {
             waitTime -= Time.deltaTime;
         }
     }
 }

}