GMaps WV (as for WebView) offers Google Maps in an accessible way. It wraps the Google Maps website as if you’d open it in the browser. Good backup when travelling, esp. for public transit in my own experience.
I’m running e/OS on a FP6 and installed Google Maps inside a work profile using Shelter. I did not log in using any account and Google Maps works fine with microG but you have to use an older version of the app. You can manually download it from Aurora store (I use version code 1067793820). When I’m done with it, I close the work profile and the app cannot communicate anymore. Everything seems to work fine but I did not test extensively.