Quit game after timer reaches 0

i have this code.when timer reaches zero game is closed .How to enable timer working on all scenes ,not only on first?

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 
 public class TImer : MonoBehaviour {
 
     public int timeLeft = 150;
     public Text countdownText;
 
     // Use this for initialization
     void Start()
     {
         StartCoroutine("LoseTime");
        
     }
 
     // Update is called once per frame
     void Update()
     {
         countdownText.text = ("Time Left = " + timeLeft);
 
         if (timeLeft <= 0)
         {
             StopCoroutine("LoseTime");
             countdownText.text = "Times Up!";
             Application.Quit();
         }
     }
 
     IEnumerator LoseTime()
     {
         while (true)
         {
             yield return new WaitForSeconds(1);
             timeLeft--;
         }
     }
 }