If you have ArcGIS Pro installed on your machine then you have access to the arcpy.geocoding module with its Locator class, which can be serverless. This puts geocoding in the hands of anyone with (say) a file-based locator.
Open
Geocoder: Support path-based ArcGIS locators
+6- Contributor
+19- Supporter
It (arcpy.geocoding) exists in the Online Notebook runtime and Server Notebook runtime. If you have a portal it is also in the ArcGIS API for Python. It is not recommended you have Pro on an ArcGIS Server machine.