GNU/Linux Debian Buster Installing GNOME Tweaks Guide
Hi! The Tutorial shows you Step-by-Step How to Install GNOME Tweaks (formerly GNOME Tweak Tool) in Debian Buster 10.x GNU/Linux Desktop.
And Gnome Tweaks for Debian Buster is a Graphical interface for advanced GNOME 3+ Settings.
Moreover, Tweaks is Designed for GNOME Shell but Can be Used in other Desktops. Only a few Features will be Missing when Tweaks is run on a Different Desktop.
Finally, this guide includes detailed instructions about to Installing Best GNOME Extensions on Debian.

1. Terminal Quick Start
How to Quick Start with Command Line on Debian
First, Update the Apt Repo Sources with:
sudo apt update