Australia went to mandatory house numbers in, I think, the 60s but my grandmother refused and gave out only her house name until she passed away in the 21st century.

Searching for my address just straight up doesn't work.

Named house rather than a number, and the postcode isn't a particular street but covers a number of little tracks up to various farms.

I also don't have a road name.

The address syntax is:

Building name

Town

County

Post code

The combination of no road and no number means Google absolutely fails. It just gives suggestions of businesses nearby... Ish.

Does your location have a Place ID? Google originated Place IDs for exactly this type of use case, so that people could find places like yours without an address.