From my understanding big tech tracks us by user ID. As long as you dont log into Google, Facebook, Microsoft, etc you don't have an ID on that device. Anything they track/record etc doesn't have an ID to associate it to so it gets ignored. I do use microG anonymously and haven't seen any issues. It allows me to use any apps except CashApp and one work app. With the exception of google apps of course. I do minimize trackers just in case. You can look at app trackers here:
https://exodus-privacy.eu.org/en/ — This is a comment on: https://yakihonne.com/flash-news/nevent1qqsgg74tcvg7drvaua8gjugdg25ukksh28ywrv6hul20s8p8jd94l5qzyzezlmcce067adwhj3g7l8zvmg5wl4rl572290raq3y4ejcmhfhp7qcyqqqqqqga7sw6d