This issue seems to be a plague or stumper for folk that move to OTA. Other reports or questions such as "My other TV gets channel 42.121 and mine does not. We're in the same home. Why?"
In short, you are subject to all the reasons why a channel may not show up. Maybe a better antenna is required or changing it's orientation.
Are you old enough to remember why folk went from antennas to cable years ago?
I use an indoor antenna to get channels on my TV. Recently, I moved my LG TV from the basement to the living room, and moved my old TV from the living room to the basement. The LG TV does not get any signal from the local PBS station (Channel 22, Baltimore). It did not get that station when it was in the basement either, but I always figured that that was simply a problem with reception in the basement. But now the "old" TV is in the basement, and it gets Channel 22 just fine, just as it did when it was in the living room. It doesn't matter which antenna I use on which TV--I always get the same result. Does anyone have any idea what the problem could be?