Download this from the App Store and use it to control your Apple TV.
It’s the Apple TV 4 I have and it’s ok now because my Apple Watch is able to control it now. But thanks for responding
Apple TV Remote by Apple
https://apps.apple.com/sg/app/apple-tv-remote/id1096834193
The ‘Apple TV Remote’ in your control centre can only be used on the newer Apple TV 4 and 4K.