Server Addons Help

(sorry I’m kinda new to forums in general so sorry if I do anything wrong!)
Ok so ive posted something in another sub forum asking about what server addons I should get and can my old computer run a server, and I was told I should come to lua for server addons but I’m here and I don’t really see any addons for servers…sooo is there any that I absolutely have to have or a thread where I can get them?

You should try the steam workshop. And for your old computer being able to run it: depends on what game mode you are going to run, and how much memory, and things of the sort is available to use.