You can use ios or lineageos. You can use an email such as protonmail (although I personally find them just a touch shady, they're no doubt miles better than gmail) or host your own. Don't shop at whole foods. Pay with cash.
ProtonMail and ProtonVPN are legally separate, but they are both part of the Proton family of projects which originated from CERN.
As for internet, you can always get yourself a VPS and tunnel everything through that, so your monopoly ISP doesn't get to see anything of what you do.
I, personally, use an DuckDuckGo, an iPhone and Apple mail. Amazon isn't an issue really- just buy whatever you were going to get on amazon somewhere else - it's pretty rare that I find a noticeable price difference (unless we're talking about the cheap off branded stuff on amazon - but I don't want things like that anyway).
not using google is easy, not losing data for 15+ years and counting is significantly harder. even Apple dropped my photos due term of service change, I had to scramble gigabites off internet into disks and now my collection is an unindexed mess.