Don’t start with Arch unless you’re looking for a trial by fire. It’s a distro intended for advanced users who already know a few things about Linux. I don’t even use straight Arch, and I’ve been using Linux for years. I do use EndeavourOS as my daily driver though, and that’s basically a pre-configured Arch with a GUI installer.

Ubuntu, or one of its variants like Kubuntu or Xubuntu, is a better pick for someone who’s just starting out. Mint is supposed to be decent for new users too.

You made a wise choice picking a Radeon, btw. Nvidia support on Linux isn’t the greatest. AMD, on the other hand, is nearly plug and play since the drivers are built into the kernel. You may or may not need to install extra drivers for proper Vulkan support though.

Another thing I should mention; if you decide to dual boot with Windows, it may seem like a smart idea to share your steamapps folder between OSes, but this doesn’t usually work out well because of the way Proton uses symlinks. You’re much better off having separate steamapps folders for each OS, even if it uses more disk space that way. (Proton is the compatibility tool Steam uses for running Windows-only games on Linux. It even works better than running Linux-native games in a lot of cases)

I mention the steamapps thing, because it’s a common newbie mistake to try sharing a steamapps folder between Windows and Linux.

Linux is a pretty deep rabbit hole to dive into, and it’s not for everyone. But don’t let this discourage you; it can be rewarding if you’re willing to learn how to use it.