OnCollisionEnter fails to destroy Player GameObject

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class PlayerDeath : MonoBehaviour {
     public GameObject DeathTrigger;
 
     void OnTriggerEnter(Collider other)
     {
         if (other.tag == "PLAYERCUBE") 
         {
             Destroy (other.gameObject);
             Destroy (gameObject);
         }
     }
 }

I am at my wit's end as to how to destroy the Player gameObject upon collision. It should be just a simple little code, but I just am unable to get the PLAYERCUBE destroyed by colliding into an object.

I have dragged this code onto a gameObject cube that I have tagged "Death", and I want to make sure that the Player gameobject (tagged PLAYERCUBE) will get destroyed upon colliding it.

Here's a screenshot for context.