How to perform an audit of the apps and services running on your Android [Basic to Advanced]

Preamble Ramble: <details><summary>Summary</summary>Ideally one can find open source tools and alternatives to solve most common computing problems. eg: F-Droid k9 mail fossify suite OpenStreetMaps Aegis Thanks to the wonderful world of open source these tools exist! But sometimes we are stuck with the odd proprietary app for some specific use case, maybe no alternative exists. Perhaps we still rely on a service we don’t want to self-host. Or are in the process of migrating. Maybe you have an IoT device refuses to fun...</details>