There are distros that make it easy for non-techies to install and manage Linux, and if you have any computer aptitude at all, it should be pretty easy. The devil is in the details; if all your hardware is well supported, there's no reason why you should ever have to open a shell. Trouble usually happens with peripherals like printers and some extremely protective vendor chips like Broadcom. In those cases, it's usually still possible to make things work, but it can require researching, finding, reading how-tos, downloading, compiling and installing software.

I think 99% of trouble I've ever had in the past 20 years has been with printers+scanners or Broadcom chips - they're very common. I read about people having issues with graphics cards, but that seems to be mainly Nvidia; I've only ever had Intel or Radeon, and haven't had trouble with graphics cards in the past decade or so, myself.

Anyway, my advice is to do some distro hopping before you settle on one. Boot from a USB stick for a while; it'll be a bit slower, but it'll make playing with different desktop environments and distributions easier, before you commit.