I once read somewhere: "The learning curve for Windows is a diagonal line. The learning curve for Linux is a 90 degree angle."
The last time I messed around with Linux most stuff was super easy, but...
1st: My distro of choice used X11 by default, which apparently doesn't support individual GUI scaling per screen. Which I need for my setup. So I quickly had to dig how to make it use Wayland instead.
2nd: The headphone output on my audio interface isn't the first output. So I needed to find a software piece that lets me route audio playback to different outputs. But for that I first needed to figure out what audio subsystem I was even running on. (Why are there three of them ???)