Personally, I think Google is just as terrifying, possibly more. As an example, just take a fairly normal life situation like going out for dinner with some friends, and think about how much of it goes "through" Google: --- One of your friends sends an email to 6 others, to ask if everyone's free for dinner on Friday. 5 of the 7 people involved use gmail or a google apps address. You've never heard of the restaurant…
I try to "spread" my data. Apple for maps/messaging/photos, Signal, DuckDuckGo, Gmail, and primarily private tab web surfing. I also use different browsers for different concerns. And of course ad blockers although I'm not sure I've installed them everywhere. With my lack of social media accounts and a reup of my PIA subscription it feels like it should be a fairly private set up.
Of course, if I was really going all the way I'd use cash for everything, and curb the very modest amount of shopping I do on Amazon. I believe creeit cards almost certainly sell information based on your purchase history.
Oh! And don't forget a hat and sunglasses to avoid the myriad of cameras I'd come across in my day to day as a metropolitan.
And of course to turn off wi-fi and bluetooth when in transit. Might even be better to go into airplane mode.
So yea, just get a landline. Use snail mail (although addresses may be scanned). Hang a calendar on the wall (they are pretty, mine is pictures of Italy), stay off social media, use cash, disguise your features, and I dunno, use the internet at the library or something.
In the end, it's a giant pain and it's amazing how many vectors there are for information retrieval on the average citizen of the information age.