Apple TV is currently the best balance of privacy and convenience. The only way to get more private is using a PC, but that limits the resolution for most streaming services to 720p or 1080p.
And longevity. It just keeps getting updated tvOS versions and every provider's apps keep working - unlike on random Android TVs that just fall out of support.
I'm on my second one and I've owned them since the first version. My current one is the first generation 4k that's ... seven years old? Still works like new.
