How do I make a game over and respawn system to work with my health system

Hi. I'm creating a top down RPG for a school project and I'm trying to make a respawn button so the player can respawn at 0,0. Only trouble is, i have no clue how to. I'm very new at unity and mostly self taught. I was wondering if I could get some help with this

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class healthSysyem : MonoBehaviour
 {
     public GameObject[] hearts;
     public int life;
     private bool dead;
 
 
     void Update()
     {
         if (life < 1)
         {
             Destroy(hearts[0].gameObject);
         }
         else if (life < 2)
         {
             Destroy(hearts[1].gameObject);
         }
         else if (life < 3)
         {
             Destroy(hearts[2].gameObject);
         }
         if (dead == true)
         {
             Debug.Log("Oh no! Our player! it's broken");
             Destroy(gameObject);
         }       
     }
     public void TakeDamage(int d)
     {
         life -= d;
         if (life < 1)
         {
             dead = true;
         }
     }
 }