Same. I am one of those recent Zorin OS 18 users, and even this entry level distro meant stuff like changing BIOS settings, finding and figuring out how to get a Nvidia driver working etc.

Anyway, as for your question what you can do to increase understanding: I am now using www.Labex.io linux tutorial to get familiar with terminal commands.

Maybe further down the road this will lead me to a different distro, this one got me started and saved a perfectly fine running PC from the scrapyard :-)