My experience has taught me not to ‘apt autoremove’ unless im really sure what they are!

Take it one software at a time. See it’s running fine then move on to another. You’ll often realise something down the line will be helpful so will go back to make changes.

Keep a running list of software and the ports used.

With docker, do not automatically do :latest on important software (nginx proxy manager, SSO software, password database, anything you use regularly, etc). I did that and was burned a few times.

Also that at some point you’ll either mess up or realise it would just be easier and start again with a fresh OS install. Keep copying data (docker compose files and persistent storage) on working software before starting a new one, or before installing anything directly onto the OS, or before major updates.