Haha I fought with Home Assistant on the home/not home thing too. It's really food now, though. I think the issue is HA uses the google significant motion update, so it doesn't get realtime location data but instead updates on some black box google schedule. They have a high accuracy mode but it still doesn't seem to poll regularly. It's unclear to me exactly what changes.

On my phone I also use PhoneTrack synced to Nextcloud for location tracking, and that updates every minute. I think this seems to allow HA to get more frequent updates, as it works great for me now. Still a massive problem on my wife's phone, who has no need for PhoneTrack. Detecting WiFi network is my next plan for her, which you can do in HA as well.