We had a university hire a professor here that taught for a few years before they figured out they lied about credentials - only because they had no idea what they were doing, so it’s not an unreasonable strategy to throw as much shit against the wall as you can and see if any sticks.
When you aren’t in a rush try to do stuff in command instead, looking for a file? , try to find it in command. Need to copy and move a folder? Don’t use your file manager, use the command line instead.
Eventually you will piece together the bits you learn and it starts to make sense, and then you feel like a God. Lol.