flickering light

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class NewBehaviourScript : MonoBehaviour
{
    public bool isFlickering = false;
    public float TimeDelay;
    void Update()
    {
        if (isFlickering == false) 
        {
            StartCoroutine(flickeringLight());
        }
    }

    IEnumerator flickeringLight()
    {
        isFlickering = true;
        this.gameObject.GetComponent<Light>().enabled = false;
        TimeDelay = Random.Range(0.01f, 0.5f);
        yield return new WaitForSeconds(TimeDelay);
        this.gameObject.GetComponent<Light>().enabled = true;
        TimeDelay = Random.Range(0.01f, 0.5f);
        yield return new WaitForSeconds(TimeDelay);
        isFlickering = false;  // to change the speed you add to the random range(0.01f, 0.5f) if you change the number 5 the higher the number the less the flickering
    }
}