I’ve been very happy with my Sony in this regard. Its OS is extremely basic Android TV and it doesn’t bug you at all if you don’t connect it to the internet. Newer models than the one I have also come with a “basic TV” mode that disables most of the Android TV bells and whistles.

Yeah Sony means a higher price, so it’s not going to be as cheap as some other options, but peace is worth a lot of money in my opinion…