Here is a YouTube computer tutorial about Resetting Arch Linux, and is part of a growing collection of videos I have found which should be useful to you for resetting Arch Linux back to its state as a freshly installed Linux system. There are thousands of YouTube computer tutorials out there, but this is a good one when you need resetting Arch Linux back to its state as a freshly installed Linux system.
This tutorial, "Resetting Arch Linux" is a free tutorial you can watch, which will help you understand how to get better performance, usability, and an overall better experience using your laptop or desktop computer.