Firefox and DuckDuckGo are my daily drivers, and have been since around the time the Edward Snowden leaks dropped. At one point I was also running a degoogled Android (specifically CopperheadOS), though I've since reverted to using GApps on my current phone for pragmatic reasons.
Really, the only Google service I routinely use directly (i.e. other than because some Android app I use requires Google Play Services to function) is Google Maps.
The irony is that CopperheadOS officially only runs on... Google Pixel devices. Yes, Google Pixel devices.
If you use something like microG, all it is is a FOSS implementation of Google Play Services. You're still using Google.
I'd like to see Nextcloud become a drop-in replacement for Google Play Services. They already got Contacts, Photo and Storage support; just needs things such as a distributed Play Store and a Search Engine (SearX?).
Really, the only Google service I routinely use directly (i.e. other than because some Android app I use requires Google Play Services to function) is Google Maps.