My strategy is to buy cheapest TV on the market (which is usually an ad loaded Crapware like hisense) and then never ever connect it to the internet but use HDMI to plug into a dedicated computer.
Basically all I need in a TV apart from the display is an HDMi. It works amazing, been using like this over 10 years now.
Unfortunately if you're a stickler for image quality this isn't an option. You can still not connect it to the internet of course, but if you're buying a high end TV there's no way to avoid all the other modern TV bullshit.
Namely needing to change the settings on every input for every source type. The first few days of a new TV is a regular trip into five layers of menus as you watch a new source combination for the first time (HDR Blu-Ray, Dolby Vision streaming movie, high framerate game) and have to turn off motion smoothing, turn off sharpening, turn the whites back down from basically blue to 6500K. I mean christ, there are still TVs out there shipping today that turn on overscan by default. Analogue TV broadcasts ended in 2012 here!
Basically all I need in a TV apart from the display is an HDMi. It works amazing, been using like this over 10 years now.