How do I Instantiate a prefab on another game object's position (2D)

I need help as I am unable to spawn a prefab on my game objects position. Here is my code:

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

public class Puzzle : MonoBehaviour { private List _listeTraps;

 [SerializeField] private GameObject[] _tableauTraps;
 [SerializeField] private GameObject[] _Spikes;
 [SerializeField] private GameObject[] _Mines;
 [SerializeField] private GameObject[] _Nothing;




 // Start is called before the first frame update
 void Start()
 {
     _listeTraps = new List<GameObject[]>();
     _listeTraps.Add(_Spikes);
     _listeTraps.Add(_Mines);
     _listeTraps.Add(_Nothing);
     Init();
 }

 private void Init(){
     for(int i = 0; i < _tableauTraps.Length; i++)
     {
         
         int _aleatoireSorte = Random.Range(0, _listeTraps.Count); //pige un chiffre random
         GameObject[] n = _listeTraps[_aleatoireSorte]; //n = au chiffre piger
         int _aleatoireTrap = Random.Range(0, n.Length);
         _tableauTraps[i] = n[_aleatoireTrap];
         Instantiate(n[_aleatoireTrap]).transform.position = _tableauTraps[i].transform.position;
         // _listeTraps.RemoveAt(_aleatoireSorte);
     }
    
 }

}

And here are a couple of screenshots showing my unity editor:

This is what actually happens when I spawn my prefab: