In my mind, "decent screen" is retina-quality display, which limits things. I doubt a cheap Chromebook will have one. The Chromebook Pixel has a 13" retina display option, but why not get an M1 Air and get all the functionality of a real, mainstream OS. (Unless Chromebooks have expanded from minimal Linux using a browser?)

Personally, 15" is about the minimum screen I'll accept if I'm going to do actual work on it, and at that size I expect the choices to be sparse to none. Certainly not cheap.