I have included a image of my specs, im also using Linux sense thats what works on my laptop. Im looking for free to play games that will run smoothly on my system/laptop. I would like to try popular and maybe online titles.
I thought about trying old school RuneScape but idk.



Those specs seems decent at first glance, but my bet is that the bottleneck will be the storage, if you are using a hard drive still. If you use an ssd, or change to one, then your performance may be greatly improved
I think you could run Steam on that build, I used to play Supertux cart, and have not played 0AD in ages
Highly recommend SSDs for everyday use and HDDs for backup, an old laptop I had turned from a barely usable machine to a pretty decent one just by swapping out a HDD for an SSD.