Try Synaptic package manager, sometimes it's nice to be able to browse the repositories and see what's available.My main is apt, I just use snap for things like spotify
I've just used it for spotify as a matter of fact which I promptly removed because the app hogs more memory than just streaming through my browser
sudo apt-get install synaptic
You can use the mouse to copy and paste commands like that straight in to the terminal.
Other than that, it's just an incredibly stable and reliable system that can't get viruses and also offers you much greater internet security. What you want to do with it is up to you, added bonus knowing you can do it all for free.
Don't forget that you can still install any desktop you like in Ubuntu, in fact you can install a whole bunch of them and just switch back and forth between them to try them all out.
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