Sparkylinux is a distro based on Debian Testing, which is good on older configs. I used it wuite a lot ten years ago, without issues.
They provide a “game over” edition, which has Steam and a lot of other games related applications preconfigured, so you should have a look.
Using void linux because it has no systemd init system (it uses its own “runit” init system) ; and it is a natutal development after using Debian for a long time and wanting to understand more about gnu/linux system.
Also, it is very reliable with a lot of packages. It is standard enough so using info from arch, debian or other distro works.
But the origin was I could not understand how systemd was managing the system and it felt really contrived to go around it, so I began using void and that’s the story.