Linux is definitely the route. A lot of people use Mint or Ubuntu. But they are usually running out of date drivers.
I'd recommend looking into distros based on Fedora Workstation. It stays up to date but not as much as Arch so that it's stable.
My recommendation is any of the Universal Blue images that fit your need. They are based off of the Fedora Atomic image with added quality of life features.
Have to agree. Mint runs on long term support versions of Ubuntu releases. A lot of times this can cause issues with gaming because the kernel is so out of date, and thus the graphics driver is as well. Plus, they have snaps which are terrible compared to flatpaks.
Sounds like either a permission issue, format of your drive, or a mounting issue to me.