I can't get it to work

Im new to programing and im trying to make a dungeon generater, as something small to start out with. but it will not work

this is the code I use the first is the RoomSpawner script and the secend is the script that holds the prefabs of the Rooms

using UnityEngine; using Random = UnityEngine.Random; using System; using System.Collections; using System.Collections.Generic; using System.Security.Cryptography;

public class RoomSpawner : MonoBehaviour {

 public int openingDirection;
 // 1 --> need bottom door
 // 2 --> need top door
 // 3 --> need left door
 // 4 --> need right door

 private RoomTemplates templates;
 private int rand;
 private bool spawned = false;

 void start()
 {
     templates = GameObject.FindGameObjectWithTag("Rooms").GetComponent<RoomTemplates>();
     Invoke("Spawn", 0.1f);
 }



 void Spawn()
 {
     if (spawned == false)
     {
         if (openingDirection == 1)
         {
             // need to spawn a room with a bottom door
             rand = Random.Range(0, templates.bottomRooms.Length);
             Instantiate(templates.bottomRooms[rand], transform.position, Quaternion.identity);
         }
         else if (openingDirection == 2)
         {
             // need to spawn a room with top door
             rand = Random.Range(0, templates.topRooms.Length);
             Instantiate(templates.topRooms[rand], transform.position, templates.topRooms[rand].transform.rotation);
         }
         else if (openingDirection == 3)
         {
             // need to spawn a room with a left door
             rand = Random.Range(0, templates.leftRooms.Length);
             Instantiate(templates.leftRooms[rand], transform.position, templates.leftRooms[rand].transform.rotation);
         }
         else if (openingDirection == 4)
         {
             // need to spawn a room with a right door
             rand = Random.Range(0, templates.rightRooms.Length);
             Instantiate(templates.rightRooms[rand], transform.position, templates.rightRooms[rand].transform.rotation);
         }
         spawned = true;
     }
    
 }
  private void OnTriggerEnter2D(Collider2D other){
         if (other.CompareTag("SpawnPoint") && other.GetComponent<RoomSpawner>().spawned == true)
         {
             Destroy(gameObject);
         }
     }

}

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class RoomTemplates : MonoBehaviour {

 public GameObject[] bottomRooms;
 public GameObject[] topRooms;
 public GameObject[] leftRooms;
 public GameObject[] rightRooms;

} ,Im new to this and i have tried to follow some on yt (youtube) to find my problem but i can figur it out

this is my code Im trying to make a dungeon generater

using UnityEngine; using Random = UnityEngine.Random; using System; using System.Collections; using System.Collections.Generic; using System.Security.Cryptography;

public class RoomSpawner : MonoBehaviour {

 public int openingDirection;
 // 1 --> need bottom door
 // 2 --> need top door
 // 3 --> need left door
 // 4 --> need right door

 private RoomTemplates templates;
 private int rand;
 private bool spawned = false;

 void start()
 {
     templates = GameObject.FindGameObjectWithTag("Rooms").GetComponent<RoomTemplates>();
     Invoke("Spawn", 0.1f);
 }



 void Spawn()
 {
     if (spawned == false)
     {
         if (openingDirection == 1)
         {
             // need to spawn a room with a bottom door
             rand = Random.Range(0, templates.bottomRooms.Length);
             Instantiate(templates.bottomRooms[rand], transform.position, Quaternion.identity);
         }
         else if (openingDirection == 2)
         {
             // need to spawn a room with top door
             rand = Random.Range(0, templates.topRooms.Length);
             Instantiate(templates.topRooms[rand], transform.position, templates.topRooms[rand].transform.rotation);
         }
         else if (openingDirection == 3)
         {
             // need to spawn a room with a left door
             rand = Random.Range(0, templates.leftRooms.Length);
             Instantiate(templates.leftRooms[rand], transform.position, templates.leftRooms[rand].transform.rotation);
         }
         else if (openingDirection == 4)
         {
             // need to spawn a room with a right door
             rand = Random.Range(0, templates.rightRooms.Length);
             Instantiate(templates.rightRooms[rand], transform.position, templates.rightRooms[rand].transform.rotation);
         }
         spawned = true;
     }
    
 }
  private void OnTriggerEnter2D(Collider2D other){
         if (other.CompareTag("SpawnPoint") && other.GetComponent<RoomSpawner>().spawned == true)
         {
             Destroy(gameObject);
         }
     }

}

and i use this code to hold the prefabs

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class RoomTemplates : MonoBehaviour {

 public GameObject[] bottomRooms;
 public GameObject[] topRooms;
 public GameObject[] leftRooms;
 public GameObject[] rightRooms;

}