Dungeon Generator problems

I am trying to make a Dungeon following a perlin noise cluster, but only in 1 cluster, not the whole room. so I made a self duplicating stucture that should delete themselfs after spreading, and should die out after expanding to the size of a cluster.

But for some reason, I get an infinite loop. It doubles back on itsef, and does not get deleted once it does that.

Here is my script:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class RoomGen : MonoBehaviour
 {
     public float RoomValue;
     public float seed = 1.457582f;
     public GameObject Marker;
     public GameObject Self;
     // Start is called before the first frame update
     void Start()
     {
     }
     void LateUpdate()
     {
         RoomValue = Mathf.PerlinNoise(transform.position.x * seed, transform.position.z * seed);
         if (RoomValue >= .4f)
         {
             Instantiate(Marker, transform.position, transform.rotation);
             Instantiate(Self, transform.position + new Vector3(-1, 0 ,0), transform.rotation);
             Instantiate(Self, transform.position + new Vector3(1, 0, 0), transform.rotation);
             Instantiate(Self, transform.position + new Vector3(0, 0, -1), transform.rotation);
             Instantiate(Self, transform.position + new Vector3(0, 0, 1), transform.rotation);
             Destroy(this.gameObject);
         }
         else
         {
             Destroy(this.gameObject);
         }
     }
     
     
     private void OnCollisionStay(Collision collision)
     {
         Destroy(this.gameObject);
     }
     
 }