Admob video and rewards Ads.cs

using System;
using System.Collections;
using System.Collections.Generic;
using GoogleMobileAds.Api;
using UnityEngine;

public class AdmobvideoandrewardsAds : MonoBehaviour {

    private InterstitialAd interstitial_Ad;
    private RewardedAd rewardedAd;
// this file created by alok games
    private string interstitial_Ad_ID;
    private string rewardedAd_ID;

    void Start () {
        interstitial_Ad_ID = "ca-app-pub-3940256099942544/1033173712";
        rewardedAd_ID = "ca-app-pub-3940256099942544/5224354917";
// follow as on instagram @alok__games
        MobileAds.Initialize (initStatus => { });

        RequestInterstitial ();
        RequestRewardedVideo ();

    }

    private void RequestInterstitial () {
        interstitial_Ad = new InterstitialAd (interstitial_Ad_ID);
        interstitial_Ad.OnAdLoaded += HandleOnAdLoaded;
        AdRequest request = new AdRequest.Builder ().Build ();
        interstitial_Ad.LoadAd (request);
    }

    private void RequestRewardedVideo () {
        rewardedAd = new RewardedAd (rewardedAd_ID);
        rewardedAd.OnUserEarnedReward += HandleUserEarnedReward;
        rewardedAd.OnAdClosed += HandleRewardedAdClosed;
        rewardedAd.OnAdFailedToShow += HandleRewardedAdFailedToShow;
        AdRequest request = new AdRequest.Builder ().Build ();
        rewardedAd.LoadAd (request);
    }

    public void ShowInterstitial () {
        if (interstitial_Ad.IsLoaded ()) {
            interstitial_Ad.Show ();
            RequestInterstitial ();
        }

    }

    public void ShowRewardedVideo () {
        if (rewardedAd.IsLoaded ()) {
            rewardedAd.Show ();
        }
    }

    public void HandleOnAdLoaded (object sender, EventArgs args) {

    }

    public void HandleRewardedAdFailedToShow (object sender, AdErrorEventArgs args) {
        RequestRewardedVideo ();
    }

    public void HandleRewardedAdClosed (object sender, EventArgs args) {
        RequestRewardedVideo ();
    }

    public void HandleUserEarnedReward (object sender, Reward args) {
        RequestRewardedVideo ();
    }
}