Shelter

https://github.com/PeterCxy/Shelter "is a Free and Open-Source (FOSS) app that leverages the "Work Profile" feature of Android to provide an isolated space that you can install or clone apps into".

This is perfect for me to put all proprietary applications into this work profile, so they cannot read my contact, location, app info etc. The most powerful feature from my perspective is to freeze applications.

For example, you have an app like Venmo, Amazon, or Duo (2-factor authentication) that you merely if ever use them in your life, and there is no reason to keep them alive in your phone. You can freeze them until you defrost them. Equivalent to uninstall/reinstall these apps, but with one click.