I try to use Microsoft services on my Android phone. This isn’t just being a Microsoft “fan” but rather being compatible across devices.
On my PC Bing Maps has a lot of favourites and collections. Bing Maps is there because I have a Windowsphone. I now have moved, mainly because Windowsphone has been abandoned. I would like to carry on using my Lumia 950 but that’s a different story.
Google Maps on Android is clearly an excellent app. It is probably the best maps app. However it carries the baggage of being connected to the Google ecosystem rather than what remains of the Microsoft ecosystem.
If you look for Bing in the Google Play Store there is the Bing search app. It doesn’t include maps. If you look for Bing Maps there seems no official app. However, we are living in the world of PWA. So I type https://www.bing.com/maps. On a PC this gets you to Bing Maps. On Edge with an Android phone it takes you to Bing search. No maps.
As Microsoft abandons consumer services it seems to not even provide a way of getting to the Bing Maps website on mobile. Bing Maps does seem to sell services to enterprise customers. It seems the retail offering has given up the ground to Google like much else in the consumer space.