Can I use my hotspot to set up my Apple TV?
How do I set up my Apple TV using my hotspot?
iPhone 11, iOS 16
Question marked as
The Apple TV box will ask to connect to a home network. To the Apple TV box, your hotspot (e.g. through iPhone) is just another Wi-Fi network to choose from.
How to set up a Personal Hotspot on your iPhone or iPad - Apple Support
If Personal Hotspot is not working on your iPhone or iPad - Apple Support
Whether your mobile service provider supports (allows) such use, is a different consideration. Streaming TV use through a hotspot might be metered separately and billed separately, or throttled after a certain data limit has been reached. See their terms and conditions.
What is the model Apple TV box?