Sceptre used to sell dumb TVs but they seem to be exiting the marketplace. Computer monitors and digital signage may be your best bet. You'll have to save up for 'em but that was true of TV sets back in the day too.

Sceptre still has a bunch of dumb TVs on their site. I used to be all in on them, but I bought one that had the backlight go out after only two years, and their answer was "lol buy a new one"