We're running a solution that isn't perfect and isn't for everyone. We have a nice Sony Android TV along with a pihole. But on the TV itself I installed f-droid and netguard. Netguard's UI sucks on a TV, but it's workable. I use it to block Internet access to everything including Google. Only a few streaming apps have internet access. There was some trial and error with a handful of dependencies too.

If I need to update an app, I temporarily allow Google services access. All the streaming apps work well, except for HBO Max which takes a few minutes to load. I suspect it has a long timeout/retry count for something I'm blocking. But once it loads, it's fine.

I also use a different and basic home launcher so we can open the apps we want immediately, without having to deal with shifting algorithm-based icons. But even if we use the Google launcher, it's mostly empty and free of ads because it can't connect. It does still capture what I recently watch though.

Overall it's a decent experience, mainly because we're not being bombarded by more ad algorithms.