We're reaching the end of an era wherein billions of dollars of investor money was shovelled into tech startups to build large user-bases, and now those companies (now monoliths) are beginning to constrict their user-bases and squeeze for every single penny they can possibly extract. Fair or not.
Now more than ever, it's important for us to step back and reconsider whether we want to billboards for these companies anymore.
For anyone unfamiliar, some good resources to have when starting your degoogling are below:
Privacy Guides - A list of privacy-respecting services you can use.
Plexus - A crowdsourced information bank of service compatibility with degoogled devices.
This random PDF - A study from 2018 detailing data that Google tracks about its' users.
As far as my PCs, I use a subscription service for email (fastmail.com). I'm still using the Chrome browser, but at some point I may have to go to Firefox for the sake of my uBlock Origin extension which I rely on heavily. Functionality of that extension on Chrome may be reduced at some point by the forced migration to Google's new extension platform (Manifest V3).
I have to have a Google account for my Android phone. I don't think I'll ever be able to get away from that. I mean you have two choices with phones, Android or iOS. I'm not going anywhere near Apple so Android is it. I've audited all my privacy settings in my Google account to minimize personal data, whether they actually honor those settings or not, who knows.
You dont need a google account to run an android phone. Look in to Fdroid and Aurora store. You can disable, although not remove, a lot of the google services too. It's not perfect de googleing as they still track you through hidden built in services like the one that the phone uses to check it's online.
If you buy/finance your phone through your carrier, you're almost guaranteed to have a locked down bootloader. Also, and I'm unable to find the article at the moment, but apparently larger banks are forcing google to inhibit users' ability to root their phones in the name of security.
I typically get unlocked phones because of that. I hadn't heard about the banks, but they are typically ok as long as they are unlocked and paid for upfront.
It's not so much any of that, I think it had to do with fears of people unlocking services that carriers can charge fees for (ie mobile hotspot). Banks were worried about people somehow hacking their systems or compromising security. It all had to do with SafetyNet hardware attestation, and that Google was under increased pressure from the finance industry to guarantee software security (and in the process make rooting devices or using unauthorized ROMs damn near impossible), but I still can't for the life of me find the article.