I may have APT, but I don’t know. I don’t even know what it is or when I might need it.
You use Ubuntu and don't know whether you have apt, or what it is? That is actually a bit amazing. Apt is the front-end to dpkg, which is the standard Debian package management system. These are what are used to install deb files, which are the binary packages used on Debian and Debian based systems like Ubuntu. Most commonly people would use synaptic, a gui app, or aptitude, a console app, to maintain the various applications that they have installed on their system.
“You use Ubuntu and don’t know whether you have apt, or what it is? That is actually a bit amazing. Apt is the front-end to dpkg, which is the standard Debian package management system. These are what are used to install deb files, which are the binary packages used on Debian and Debian based systems like Ubuntu”
You have just pointed out exactly why Linux is not a viable desktop for most people. The average user won’t understand:
front-end
dpkg
Debian
deb files
binary packages
FAIL
YOU are the reason more folks aren't running Linux.