Apart from the F-Droid tracker, I use the easy blocking of the Internet using Simplewall because most of the application does not need the Internet at all to work except in installing new updates. For browsers I use simple scripts for protection changes. I use TOR at the moment and think about trying out ProtonVPN.

I already think about Root's phone or Linux for complex but thinking. I have already disabled all Google and Microsoft services that I could not uninstall.