how to get off the enemy from the player top?

There are times when my player stays on top of my enemy and vice versa. I used the following code to get off my enemy from my player and vice versa. But sometimes the sprite falls in a corner between the ground and the wall, becouse Unity does not detect collisions well there and the sprite crosses the ground and fall untill infinite. (Unity has is a big problem with the tilemap corners).

Can you tell me a better way to get my enemy off my player? Thank you so much.

 void OnCollisionStay2D(Collision2D collision)
 {
     if (collision.gameObject.name = "Tilemap")
     {
         boxCollider.isTrigger = false;
     }
 
     if (collision.compareTag("Enemy"))
     {
         Vector3 n =  collision.GetContact(index).normal;
 
         if (Mathf.CeilToInt(n.y) == 1)
         {
             boxCollider.isTrigger = true;
         }
     }
 }
 
 private void OnCollisionEnter2D(Collision2D collision)
 {
     boxCollider.isTrigger = false;
 }
 
 private void OnTriggerEnter2D(Collider2D collision)
 {
     boxCollider.isTrigger = false;
 }
 private void OnTriggerExit2D(Collider2D collision)
 {
     boxCollider.isTrigger = false;
 }