You said arch is not for beginners, OP is asking for a distro to learn. I asked why atomic is not for beginners, not for someone to learn. Op also didn’t say what she wants to learn about linux. Maybe she is no software dev and doesn’t want to learn how to package software. But even then, distrobox is only a few clicks away. Learning how to tweak the system before learning about firewall and other stuff is beyond beginner level in my opinion.
I guess the best distro for gamers is https://github.com/ublue-os/bazzite
I’m no gamer but if I were, I’d go with that. Thus could be helpful as well https://fedoraproject.org/atomic-desktops/