Trouble using SIRI on my new Apple TV 4the Gen

No Siri for Belgium at this time. The following countries are supported: Australia, Canada, Great Britain, United States, Germany, France, Spain, and Japan

Even Siri for Apple TV is not working in UAE. Don't understand why they cause these kind of inconvenience to us who pay same or higher prices

About Search on your Apple TV (4th generation) - Apple Support

Search for movies and TV shows in multiple apps at once

Use Siri (in select countries) or the Search app to look for movies and shows across apps on your Apple TV (4th generation). You can search by title, genre, actor, and more. With Siri, you can also refine your search as you go.

When you look for content with Siri or the Search app, Apple TV checks these content providers, with more coming soon:

• United States: Movies and TV shows in iTunes, HBO GO, HBO NOW, Hulu, Netflix, PBS, PBS Kids, SHOWTIME, SHOWTIME Anytime
• Australia, Canada, France, Germany, and United Kingdom: Movies and TV shows available on the iTunes Store and Netflix
• Other countries and regions: Movies in iTunes

To look for content in one app at a time, just open the app and use its own search function.

About search

• You can use the Search app to find Apps in the App Store. Siri doesn't search for apps in the App Store.
• If you have an Apple Music membership, you can use the Search app or Siri to search Apple Music.
• The Search app and Siri don't search Home Shared libraries.

Are there any update when Siri will be available on apple TV?

This is a user forum, no one here can answer that