I disconnected both of my smart TVs from the internet and have yet to tell the difference. :)

This is the way.

I just want a TV to be a display that shows what I plug into it.

This type of device is called a “monitor”. Additionally, it provides a more precise image, without artificially added blur or whatnot.

Where can I get a 55 inch monitor thats not one of those weird ass ultrawide thingies?