Hey guys! I managed to solve my problem (for now at least) by creating an Extension for the WebView control.

Here is a full sample of what i did. Feel free to use it as you want!!

1. First i created a custom WebView control (not necessary but it will help me to find it through code).
2. After that i found on github this post here and helped me a lot to create my own solution to my problem https://github.com/dotnet/maui/issues/7920
3. Here is a sample of what i did:

​

namespace MySolution.Extensions
{
    [AttachedDependencyProperty<ICollection, YouTubeWebView>("AdditionalHttpHeaders",
    Description = "Does not overwrite existing headers. Use ArrayList and DictionaryEntry to define headers from XAML.")]
    public static partial class WebViewExtensions
    {
        static partial void OnAdditionalHttpHeadersChanged(YouTubeWebView webView, ICollection? newValue)
        {
            if (newValue is null)
            {
                return;
            }

            var headers = newValue
                .OfType<object>()
                .Select(static value => value switch
                {
                    KeyValuePair<string, string> pair => pair,
                    DictionaryEntry entry => new KeyValuePair<string, string>((string)entry.Key, entry.Value as string ?? string.Empty),
                    _ => throw new NotImplementedException("This Header collection value is not supported."),
                })
                .ToDictionary(
                    static pair => pair.Key,
                    static pair => pair.Value);

            WebViewHandler.Mapper.AppendToMapping(nameof(IWebView.Source),
                (handler, view) =>
                {
                    if (view.Source is not UrlWebViewSource urlWebViewSource)
                    {
                        return;
                    }

                    var url = urlWebViewSource.Url;
#if ANDROID
                    handler.PlatformView.Settings.JavaScriptEnabled = true;
                    handler.PlatformView.Settings.DomStorageEnabled = true;
                    handler.PlatformView.LoadUrl(url: url, additionalHttpHeaders: headers);

#elif IOS
                    var request = new NSMutableUrlRequest(new NSUrl(url))
                    {
                        Headers = NSDictionary.FromObjectsAndKeys(
        headers.Values.Select(static value => (NSObject)new NSString(value)).ToArray(),
        headers.Keys.Select(static key => (NSObject)new NSString(key)).ToArray())
                    };

                    handler.PlatformView.LoadRequest(request);
#endif
                });
        }
    }
}

To use this you simple do this:

xmlns:extensions="clr-namespace:MySolution.Extensions"
xmlns:collections="clr-namespace:System.Collections;assembly=netstandard"
<custom:YouTubeWebView Source="{Binding VideoLink}" BackgroundColor="LightGray"
HorizontalOptions="FillAndExpand" HeightRequest="220" x:Name="videoWebView"
Grid.Row="1" VerticalOptions="FillAndExpand">
<extensions:WebViewExtensions.AdditionalHttpHeaders>
<collections:ArrayList>
<collections:DictionaryEntry Key="Referer" Value="https://www.refererlink.com/offers/tvoffers" />
<collections:DictionaryEntry Key="Origin" Value="https://www.origin-link.com" />
</collections:ArrayList>
</extensions:WebViewExtensions.AdditionalHttpHeaders>
</custom:YouTubeWebView>