sudo apt update
sudo apt dist-upgrade
sudo apt install firefox
https://github.com/elementary-tweaks/elementary-tweaks
https://elementaryos.stackexchange.com/questions/17452/how-to-display-system-tray-icons-in-elementary-os-juno
https://wallpaperflare.com
https://github.com/lutris/lutris/wiki/Installing-drivers
https://flathub.org/home