I don't think you may realize how much of your online activity is already tracked by google / facebook / instagram.
Google's javascript is everywhere, including explicit tracking with analytics, and lots of CDN loads for endless lists of things (js libraries, fonts etc).
Their properties also track you, google search, youtube, email. They also make software you might use (chome / android / google maps / google play store).
If you think something about signed exchanges let's google track you, and they can't now... please examine these assumptions.
Folks who come up with these super complex schemes (google will use javascript loaded into AMP to take over and track you) ignore that google ALREADY tracks them.
And folks who say they don't use any google products (no android / google maps/ play services / chrome etc etc) are often either lying or don't understand how many third parties load google analytics into websites, or load recaptcha bot protection etc.