Captain Moderate wrote:
I was not aware of the Refine Location feature in Maps until recently (perhaps because I never had cause to use it). So these first attempts are my first ever! Perhaps I am not doing it right? Perhaps it has never worked? Have you seen this work?
As a wild guess— Refine location would be dependent on available cell towers, other wifi devices, all in an effort to establish a triangulation.
It may well be this is the best it will get. You can try a cellular hotspot connection and compare your results.
If it does not work then it does not work for you, it would be relative to your specifics.
Try again at some later date if it is important to you.
see the help menu—>

Show your current location in Maps on MacAppleOfficial Apple Support › guide › maps › mac
Some associated information—
Set up Find My on Mac - Apple Support
Locate a device in Find My on Mac