Linux Mint or vanilla Ubuntu. They're nice, we'll developed and stable with lots of software available. Never need to use a command line unless you want to
The file system takes some getting used to, but it's similar to Mac. The only folders you need to worry about most of the time are /Home and /Media. Home is where all your stuff is. Media is where you find all your drives and partitions
We had Bernie 🤷🏻♀️