OnCollisionEnter 2d not working

I have 2 sprites with a polygon collider 2d and a rigidbody2d, one of the two has a script for OnCollisionEnter:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class colliderScript : MonoBehaviour
 {
     // Start is called before the first frame update
     void Start()
     {
         
     }
 
     // Update is called once per frame
     void Update()
     {
     }
 
     private void OnCollisionEnter2D(Collision2D collision)
     {
         if(collision.gameObject.tag == "machine")
         {
             Debug.Log("Touch..");
         }
 
     }
 
 }
 
 

But it isn't working and i think it's because of this script that let the sprite follow your mouse and snap to gird:

     public void MouseFollow()
     {
         if (gridEnabled == true) {
             mousePosition = Camera.main.ScreenToWorldPoint(Input.mousePosition);
             mousePosition.z = transform.position.z;
             transform.position = Vector3.MoveTowards(transform.position, mousePosition, moveSpeed * Time.deltaTime);
             float snapInverse = 1 / snapValue;
 
             float x, y, z;
 
             x = Mathf.Round(transform.position.x * snapInverse) / snapInverse;
             y = Mathf.Round(transform.position.y * snapInverse) / snapInverse;
             z = depth;  // depth from camera
 
             transform.position = new Vector3(x, y, z);
         }
 
         if (Input.GetKeyDown(KeyCode.R))
         {
             gridEnabled = false;
         }
     }

this one is on both of the sprites that need to collide with eachother. Here you see a picture of the Rigidbody2d and the polygoncollider2D:

These two peaces need to collide:

thank you in advance!