Game freezes on Play

Hi, I've been making this enemy generator, which is called whenever scene is started and it freezes most of the time. Sometimes it let's to play once but as soon as I hit play second time, it freezes, unity needs to be restarted. Logs last lines:

 UnityEngine.DebugLogHandler:Internal_Log(LogType, LogOption, String, Object)
 UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
 UnityEngine.Logger:Log(LogType, Object)
 UnityEngine.Debug:Log(Object)
 EnemyGenerator:Start() (at Assets\Scripts\Utils\EnemyGenerator.cs:23)
  
 (Filename: Assets/Scripts/Utils/EnemyGenerator.cs Line: 23)

And here is my script, I tried to find something that may loop forever but I couldn't.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class EnemyGenerator : MonoBehaviour
 {
     public List<GameObject> camps;
     public List<GameObject> enemies;
     int threshold;
  
     public List<GameObject> campAreas;
     public List<GameObject> enemyAreas;
 
     public int campsToSpawn;
     public int enemiesPerAreaMin;
     public int enemiesPerAreaMax;
 
     void Start()
     {
         for (int i = 0; i < campsToSpawn; i++)
         {
             threshold = Random.Range(0, camps.Count - 1);
             Debug.Log(threshold);
             var campPlace = Random.Range(0, campAreas.Count - 1);
             var camp = Instantiate(camps[threshold], campAreas[campPlace].transform.position, Quaternion.identity);
             if (camp != null)
             {
                 campAreas.RemoveAt(campPlace);
             }
         }
         Debug.Break();
         bool canSpawn = true;
 
         for (int i = 0; i < enemyAreas.Count; i++)
         {
             threshold = Random.Range(0, enemies.Count - 1);
             List<GameObject> enemiesSpawned = new List<GameObject>();
             var enemyCount = Random.Range(enemiesPerAreaMin, enemiesPerAreaMax);
             for (int j = 0; j < enemyCount; j++)
             {
                 var pos = new Vector3(Random.Range(enemyAreas[i].GetComponent<BoxCollider>().bounds.min.x, enemyAreas[i].GetComponent<BoxCollider>().bounds.max.x), enemyAreas[i].transform.position.y,
                         Random.Range(enemyAreas[i].GetComponent<BoxCollider>().bounds.min.z, enemyAreas[i].GetComponent<BoxCollider>().bounds.max.z));
                 if (enemiesSpawned.Count == 0)
                 {
                     GameObject en = null;
                     enemiesSpawned.Add(en = Instantiate(enemies[threshold], pos, Quaternion.identity));
                 }
                 else
                 {
                     for (int x = 0; x < enemiesSpawned.Count; x++)
                     {
                         if (Vector3.Distance(enemiesSpawned[x].transform.position, pos) < 3f)
                         {
                             canSpawn = false;
                         }
                     }
                     if (!canSpawn)
                     {
                         j--;
                     }
                     else
                     {
                         enemiesSpawned.Add(Instantiate(enemies[threshold], pos, Quaternion.identity));
                     }
                 }
             }
             Debug.Break();
         }
     }
 }
 

Thank you for your answers.