I understand downloading a file to install something.
That's a terrible start.
Software installation sources by priority:
- Package Manager
- Flatpak
(Graphical utilities like Discover unite these two) - AppImages downloaded from the browser
- Rpm/Deb packages downloaded from the browser, but really should be avoided
- ONLY IF YOU REALLY KNOW YOUR SHIT YOU CAN RUN SCRIPTS TO INSTALL STUFF
You can add other stuff like toolbox after n.2 once you've got more experience.