Thisa guide is designed to show you how to use a USB drive with your Android Phone, this also works with an Android tablet as well.

Why you should keep USB debugging enabled It's the safety net for valuable files When you enable USB debugging, you can issue commands and retrieve files from your Android phone with a computer ...

With modern phones without removable batteries simultaneous USB/audio dongle and charging usage via the USB-C connector is claimed to be possible, but this is something to check beforehand.