I have many photos that don't have GPS tags, so I'd like to tag them manually by the name of the city, like "Bangalore". The goal is to have the photos automatically organised by location, either in Lightroom or in any other app I may choose to use in the future (like Google Photos or Apple Photos).
I edited the "City" field in Lightroom's Metadata, specifically the Location dropdown:
I don't know if this field is the right one to set. For example, when I export this photo to JPEG and open it in Preview on the Mac, it does not show a map of Bangalore, which it does for another file that has an actual GPS tag. So, I suspect that this field will not let apps automatically organise photos by the location, or show a map view.
So, how do I tag my photos with the name of the city, and have it work equivalent to a GPS tag? I use Lightroom, and I'm not interested in finer granularity than a city, like the neighborhood or the street.