Question Ads are making me want to quit Unity

Okay, so I've looked up tutorial after tutorial, and the Unity docs, and other forums, I even tried Chat GPT. My ads are not showing, and I do not understand why. I have a script that Initilizes the ads, and a script to show the ads every 5 levels (scene loads in this case.)

Initilizer:

Code (csharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.Advertisements;
5.  
6. public class AdsInitializer : MonoBehaviour, IUnityAdsInitializationListener
7. {
8.     [SerializeField] string _androidGameId;
9.     [SerializeField] string _iOSGameId;
10.     [SerializeField] bool _testMode = true;
11.     private string _gameId;
12.  
13.     void Awake()
14.     {
15.         InitializeAds();
16.     }
17.  
18.     public void InitializeAds()
19.     {
20. #if UNITY_IOS
21.             _gameId = _iOSGameId;
22. #elif UNITY_ANDROID
23.             _gameId = _androidGameId;
24. #elif UNITY_EDITOR
25.         _gameId = _androidGameId; //Only for testing the functionality in the Editor
26. #endif
27.         if (!Advertisement.isInitialized && Advertisement.isSupported)
28.         {
29.             Advertisement.Initialize(_gameId, _testMode, this);
30.         }
31.     }
32.  
33.  
34.     public void OnInitializationComplete()
35.     {
36.         Debug.Log("Unity Ads initialization complete.");
37.     }
38.  
39.     public void OnInitializationFailed(UnityAdsInitializationError error, string message)
40.     {
41.         Debug.Log($"Unity Ads Initialization Failed: {error.ToString()} - {message}");
42.     }
43. }

and then to show the ads:

Code (csharp):

1.  using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.Advertisements;
5.  
6. public class Interstitialads : MonoBehaviour, IUnityAdsLoadListener, IUnityAdsShowListener
7. {
8.     [SerializeField] string _androidAdUnitId = "Interstitial_Android";
9.     [SerializeField] string _iOsAdUnitId = "Interstitial_iOS";
10.     string _adUnitId;
11.  
12.  
13.     static int loadCount = 0;
14.  
15.     void Start()
16.     {
17.         if (loadCount == 5)
18.         {
19.             loadCount = 0;
20.             ShowAd();
21.         }
22.         else
23.         {
24.             loadCount += 1;
25.         }
26.        
27.     }
28.  
29.     public void ShowAd()
30.     {
31.         Advertisement.Show(_adUnitId, this);
32.     }
33.  
34.  
35.  
36.     void Awake()
37.     {
38.         // Get the Ad Unit ID for the current platform:
39.         _adUnitId = (Application.platform == RuntimePlatform.IPhonePlayer)
40.             ? _iOsAdUnitId
41.             : _androidAdUnitId;
42.  
43.         LoadAd();
44.     }
45.  
46.     // Load content to the Ad Unit:
47.     public void LoadAd()
48.     {
49.         // IMPORTANT! Only load content AFTER initialization (in this example, initialization is handled in a different script).
50.         Debug.Log("Loading Ad: " + _adUnitId);
51.         Advertisement.Load(_adUnitId, this);
52.     }
53.  
54.     // Show the loaded content in the Ad Unit:
55.  
56.     public void OnUnityAdsAdLoaded(string placementId)
57.     {
58.        
59.     }
60.  
61.     public void OnUnityAdsFailedToLoad(string placementId, UnityAdsLoadError error, string message)
62.     {
63.        
64.     }
65.  
66.     public void OnUnityAdsShowFailure(string placementId, UnityAdsShowError error, string message)
67.     {
68.  
69.     }
70.     public void OnUnityAdsShowStart(string placementId)
71.     {
72.        
73.     }
74.  
75.     public void OnUnityAdsShowClick(string placementId)
76.     {
77.        
78.     }
79.  
80.     public void OnUnityAdsShowComplete(string placementId, UnityAdsShowCompletionState showCompletionState)
81.     {
82.        
83.     }
84. }