if your looking for something super beginner friendly, i would reccomend Mint (ubuntu based). if you want something slightly more work to learn, then EndevourOS (arch based, similar to manjaro), because it has Pacman and the Arch User Repository. both have good support and community, and many editions (different desktop environments preconfigured), i would recommend KDE or maybe Cinnamon (better for Mint), though it is not as big of a choice as distro (you can change DEs). KDE has a lot of awesome features out of the box, so its a great choice for beginners