I don't know how to degoogle at this point. 90% of my registered accounts across the internet are with my Gmail account because I didn't want them tied to my private email.
If you have the time and are interacting with the account, take the second to change it away from gMail. Insisting on doing them all immediately is setting up a Herculean task that'll almost certainly leave you demoralized. This gets your most-used (and presumably most important) accounts first,and feels much smaller and more manageable.
After 6 (or 18, whenever) months of this you can summon some motivation to change over the last 20 accounts and be done with it.
You should probably spend some time on changing that. The only thing keeping me inside the Google ecosystem is my university and I hate that since they are paying for it anyway, so it makes absolutely no sense if not for it being the lazy way of doing things. Why choose to be lazy when it's clearly doing more harm than good?
I managed to install android with microg and it has worked flawlessly for 4 years now. There are many options to do this of course, but they all require a lot of time to set up. Still a better alternative than being locked up under Google.
Years ago, when I saw the invitation "Sign in with your Google account" popping up on every site, I suspected it was a trap to hold users hostage.
Take a private email address and move away from Gmail one service at time.
There's an entire subreddit dedicated to helping people degoogle. One of the hardest things to get rid of is Google Maps as there's no real alternative that's as good.
I haven’t touched Google maps in ages - I use Apple Maps which is decent these days (not the dumpster fire it was at launch - and even so, I used it back then, if only to de google a bit).
If the point is to avoid US companies this won’t be useful, but if the point is to avoid Google specifically, it is an option.
My family has <ourlastname>.com that we registered in 1996, but for email, I mostly use my own mail-related domain name (<word>mail.com), which I use for all pseudonymous accounts.
