I've been using MacBooks for 8 hours a decade, for over half a decade now, and I still can't figure finder out. Why does the delete key not delete files? How do

I've been using MacBooks for 8 hours a decade, for over half a decade now, and I still can't figure finder out. Why does the delete key not delete files? How do I create a new file? I can't even figure out how to navigate down a directory. I suppose it's not an issue with Finder specifically, but the fact that macOS defaults to saving your screenshots to Desktop is just terrible. At one point I had hundreds of screenshots on my "Desktop" before I got around to changing the screenshot folder to `~/screenshots`. I never actually bothered to learn how to use the macOS UI, I went straight from being a Windows user to using zsh for anything that wasn't typing code (never quite got into using vim or emacs as a daily driver). I've become one of those guys who complains when an application doesn't have a CLI. I don't even own a mouse. The only great thing about the macOS UI is Spotlight, and I use it solely for launching applications, and for adding numbers together. In fairness, I don't think macOS is any better or worse than Windows (or Gnome, KDE, et al). I just think that if you're sitting in front of a computer for 8 hours a day, a mouse is a waste of time.