Their easy installer is why many people I know installed it, but it only supports 21 devices and mine wasn't one of them, so I can't say much about usability or security. If yours is one of them, there's also a Linux guide on their website: https://doc.e.foundation/easy-installer
"You use steam-installer from Ubuntu repos.
There is also the official .deb installer from Valve
Their differences: a) Valve's Steam & steam dependencies get updates. Ubuntu package does not. For now in Mint 22 this is not a problem. Both packages are in the same version or they were the last time I checked but this was quite recently.
b) Ubuntu package still uses an obsolete folder layout in your "home" that official Steam doesn't follow any longer. It was creating some problems."
This is an older thread but as I said, it was just an example. There's tons more on that forum.
In Mint most people recommend installing Steam directly from the website as .deb. There are dozens of informative threads on the official forums, which also explain some differences of the installation method, for example: https://forums.linuxmint.com/viewtopic.php?t=427582
Diablo 2 - I've played all classes, some in higher difficulties, again and again and it didn't get old for a very long time. Today I'm not enjoying these kind of games anymore but I'm not sure why. Are they so different or has my taste changed so much?
In Mint most people recommend installing Steam directly from the website as .deb. There are dozens of informative threads on the official forums, which also explain some differences of the installation method, for example: https://forums.linuxmint.com/viewtopic.php?t=427582
Maybe you can also find open source communities in your area. After some digging, I was surprised how many groups there are in my area and they are always happy to get additional hands to organize stuff or run errands etc.
I had a similar issue on a Dell Latitude a few weeks ago, with installing Mint though. The problem there was that it had an entry in the BIOS that was called something like "Windows Boot Loader". So Mint could find the OS with the Live USB, but not when starting the Laptop. Turned out, only unchecking that entry didn't do the trick, I had to delete it in the BIOS and that worked by clicking into the entry, then a button would appear that let me delete it. I only ran into that solution by chance. Maybe you can check the BIOS for any sorts of entries like that. Please let us know how it goes.
I really like Mint, but I wouldn't say it "has relatively up-to-date updates".
First thing that came to mind was Fedora, if you are willing to try an immutable distro I highly recommend Bazzite, but tinkering has its limits there.
Their easy installer is why many people I know installed it, but it only supports 21 devices and mine wasn't one of them, so I can't say much about usability or security. If yours is one of them, there's also a Linux guide on their website: https://doc.e.foundation/easy-installer