* switch default search engine to DuckDuckGo (can still use !s bang when one wants to see what Google has)
* use tracking blocker (uBlock origin, BlockBear on iOS)
* use anonymous/private/porn mode browsing most of the time (except for sites I actually want to be logged in permanently)
* use Zoho as a replacement for shared Google docs
* use Youtube either in private window, and/or download content with youtube-dl
* use Apple Maps or OpenStreetMaps instead of Google maps, though still revert to Google maps sometimes. It's good. (But never log in, and don't use the apps).
* long ago switched to different email for main email, and forwarded gmail account to it (nobody uses it anymore). (In fact, I use a catch-all domain now (very easy to set up), and a fresh email for basically every account. Quite handy.)
* for contacts, photos, etc. I use Apple's built-in stuff. I do trust Apple a bit more (and it's a different business model; quite evidently unfortunately when you look at recent iPhone prices.)
All in all, I think a fairly degooglified life is eminently possible.