Satnav there is Pure Maps (OSM client), which can connect to sources like HERE to get traffic data to provide voiced guided turn-by-turn instructions. Of course there is also all the Android apps like Google Maps available, and their mobile site works fine.

On the topic of mobile sites, you can also install them as dedicated app drawer icons via Gnome Web & Firefox PWA for any site.

This means if your bank app doesn’t like vanilla Android, GApps, you can use a comparable dedicated web app.

For parking, I’ve found a surprising amount have mobile sites, so I don’t need to install their bloaty Android app onto my GNU/Linux phone.