You can install Nominatim om your own hardware and then make as many queries as you want. There are also companies offering hosted Nominatim (e.g. geofabrik), w

You can install Nominatim om your own hardware and then make as many queries as you want. There are also companies offering hosted Nominatim (e.g. geofabrik), which will come with a limit and a way to see how much you have used.