I don't even run microg. Here WeGo is great for maps. Firefox is great as a browser, and has nice things like playing youtube in background (after adding an extension) or ublock. Slack works (without notifications), Spotify, Netflix, Authy, Signal... Many things have PWAs that work because they are platform-independent. For installing things there's F-Droid or APKUpdater. You could even use Facebook Messenger without Google and still get notifications. My battery is great and Android