Unfortunately most TVs are "smart" TVs (the dumbest idea ever, seen from a tech's point of view - you're stuck with whatever is in the TV, unlike if you just connect your Pi (or even Chromecast) etc. through HDMI). But non-"smart" TVs are still out there, fortunately. I found a very nice Philips DVB-T "dumb" TV. And it was quite a bit cheaper than the equivalent sized Samsung "smart" TV. It does everything I need (and the guide is broadcasted over DVB-T, so no net is needed for that. A Pi connected to HDMI makes it smart, but my way.)