It's impossible to de-google or meaningfully remove unwanted stuff from Smart TVs while keeping them usable for streaming purposes.
What you want to do is factory reset, don't connect to the internet, go into settings and turn off whatever you can, and then use a streaming box.
Yes it's an additional cost but it's BETTER. The processors and memory in those TVs are lousy, the apps are often sluggish, the experience is simply not great. Frankly the hardware was built not to be usable for you, they are data collection platforms that include minimal low quality streaming experiences in order to collect data. No software is going to fix that.
Want something that "just works" and supports all the major streamers? Get an Apple TV 4k. It's pretty private but importantly no ads, clean interface, powerful hardware. Is it maximally private? No. But it is easy.
Want to put in effort? You can get either a Dune-HD box (some have dual-OS without reboot where one is Netflix certified to get you full resolution while passing DRM checks while another is unlocked bootloader which you can install all kinds of things like Plex and Kodi on) or get some other Android streaming device of your choice (Walmart's Onn brand 4k devices used to be very good and cheap though you might need to check as I heard rumors the latest devices can't be unlocked).
You'll have a better experience on more powerful hardware and will never want to go back to the bad on-board TV experience.
We couldn't see this within a year of it happening why? Why exactly?
But now that they've had plenty of time to edit, cut, splice, or AI together a bunch of footage of an empty hallway in front of a cell with timestamps on it suddenly we have proof that isn't that definitive but would have been more convincing if released within months to a year of his death.
I'm calling it that this is just footage of a hallway with no view into the cell, footage that could have been edited together from footage from previous days or later days, it may or may not show guards walking up and down. At most it'll have time-stamps hard-coded into the video stream but anyone with access to the facility could record video from that angle after the fact and add in their own hard time-stamps that match those used by the systems in place at the time. It would be possible pre-AI to do this kind of manipulation and fakery with a single experienced Hollywood film editor but AI could definitely be used to make it more convincing especially if you're trying to insert a now dead guard into the picture.