You seddit right!!

Google then sells your data to data brokers and anyone willing to pay a pretty penny. In the end it doesnt matter if your device is only bleeding out of the Google hole exclusively because everyone else can just buy it off Google (who probably does a better job at deanonymising and aggregating your data.

My gripe with Greenify is its not open sourced amd has a bunch trackers. https://reports.exodus-privacy.eu.org/en/reports/com.oasisfeng.greenify/latest/

Google is paying copius sums of money to in AdBlock Plus (asuming this is the extension you are speaking about), makes sense to avoid it completely and run uBlock Origin.

https://www.insider.com/why-google-has-to-build-its-own-adblocker-2017-4

Use Pixel Droid. Download from F-Droid.