How to get GPS working? (Librem 5)

Uhm. I was about an hour outside. Maps shows me still a wrong position, about 300m far away from my place. What I’m doing wrong?

When I do a

sudo grep -a '$..GSV' /dev/gnss0

then I get something like:

$GPGSV,1,01,10,19,319,,,,,,,,,,,,*4A
$GPGSV,1,01,10,19,319,,,,,,,,,,,,*4A
$GPGSV,1,01,10,19,319,,,,,,,,,,,,*4A