Yeah, unfortunately, you can hardly find a "dumb" TV anymore with decent features. I had to buy a smart TV the last time I upgraded only because it was the only model I could find with a decent set of inputs and outputs. But I've found that it's a lot less "smart" and intrusive when you don't plug it into the router or give it your wifi password.
Google commercial display TV. You will find plenty. Not as cheap because they are not subsidized by apps, tracking and adware.