The raw GNSS hardware seems to work but the integration with the rest of the system is probably lacking. However you need to spend some one-off time outside in order to download the ephemeris from the satellites: Librem 5 GPS/Location Tracking - #16 by angus.ainslie
There could be lots of answers:
- from the details of the mobile carrier that you connected to
- from the (public) IP address that you have
- from any visible WiFi networks