There's two Google apps I just can't live without: YouTube and Google Maps. There's simply no alternative to the amount of value these bring me. OSM is getting good but it's just not there yet. I'm working on this in my area.
I'd suggest to anyone worried about Google tracking to use Privacy Guard built into LineageOS, which aims to make each and every request for sensitive permissions explicit.
A big benefit of free software is that we can also use useful proprietary apps without giving up control of our hardware.
Check out NewPipe (https://github.com/TeamNewPipe/NewPipe) to replace the proprietary YouTube client on Android. For Maps, thankfully it still works in Firefox, which entirely relieves me of Google Play Services and their proprietary apps on my phone.