How to complete Apple TV setup without iOS capable iphone

My Apple TV updated to the latest version of iOS a while back (I think 16), and I can't move past the screen to "Finish Home Setup" because my phone is iPhone 7+ and it doesn't support iOS 16.

This is causing issues with my HomeKit because the Apple TV is my hub and so I don't get all the features from my security camera such as remote viewing and saving the video to the cloud.

I may also be experiencing issues with Amazon Prime app streaming (maybe its just a coincidence) and other services because of this.

Basically, I updated my AppleTV and now I can't use some of the features and am experiencing issues because it is IOS 16 and my Iphone 7+ is IOS 15. I am stuck with a red exclamation in settings to finish setup, and can't get past the screen "Add This Apple TV to Your Home" because it requires an IOS device with IOS 16, and I do not have one.

Is there any way I can get my Apple TV to finish Home setup? Maybe I should downgrade to IOS 15 if I can? Is there any way I can keep using this Apple TV as a hub for Apple Home so I can keep using my security camera.

Thanks for your help, I just got my battery replaced by Apple last January and do not want to buy a new device just because my Apple TV updated to IOS 16.