Puppy Linux is a light ram usage distro that only needs 512mb of ram to run. It’s what I would use on older hardware a lot.

https://puppylinux-woof-ce.github.io/

And I thank them for finally pushing me to fully adopt Linux as my main OS, although they did that months ago when I ‘upgraded’ to Windows 10 and my frustrations with Windows began (8.1 wasn’t to bad really). This just seals the deal.