The distance and the budget call for 75-85". I have had good luck with an entry level Sony. I bought an X85K 85" two years ago. It's one step above the cheapest model. The cheapest model was an IPS panel which had a bit shittier performance. I don't recall in what regard. X85K is a Samsung panel. It's a standard no-nonsense LED side backlight which is very robust over time. The original unit was a lemon. It developed a line across the screen. I got it replaced under warranty. The second unit has been flawless so far. Software-wise, it's a bog-standard Android TV/Google TV. Doesn't require Internet connection to setup. With that said I use a CCwGTV with it and I don't hear a peep from the TV OS about anything. The only thing I didn't like about it was the price at the time. I bought it straight from Sony, they ship from GTA. It was available from other retailers too. I think this model might still be current actually. I still see it on Sony's web along with another one - X85J.

Prior to that I had an entry level Samsung 75". It was fine too. Didn't require Internet. The panel was a similar affair, slightly worse in terms of blacks and uniformity but I'm sure that wasn't due to its Samsungness but was simply a cheaper panel than what Sony uses.

I would go for an OLED. LG, Samsung and Sony all make good ones. I love my LG C3 and the newer C4 is also great. You could even find a C3 in a larger version so it fits your budget. the more expensive G4 is also there.

You can use it as a dumb tv if you reject the terms and services. (at least on the european versions)

Samsung is also good but lacks dolby vision and they seem to have a particular color profile that people seem to either like a lot or dislike.

If you are looking for a "dumb" TV, check out models that are for "digital signage" like the Samsung BEC-H series. They are as dumb as you can get while still buying new.

Canadian? then https://forums.redflagdeals.com/costco-hisense-2022-2023-2024-4k-43-100-tv-model-sale-clearance-298-2629232/

With your budget, take the 75U78N at Costco, 2yr warranty + you can extend to 6yr for 150$ I think.

Hisense especially the 78N (and 88N) have absolutely beautiful stunning picture, maybe one of the best for the buck, check the review https://www.rtings.com/tv/reviews/hisense/u7n-u7-u75n it handles DolbyVision, HDR, 144Hz, etc

It does not use a shitty OS like roku nor ads like Samsung. You may need to have it plugged on internet for 1st boot and FW update, but after this you can obviously disconnect it, plug your HDMI device and that's it, it will act as a dumb monitor.