Check out the page for naan (any). One of the usages is "naan jul" (any man). I would recommend tacking on exactly what "naan" is referring to, even if you're trying to just say "anything". You might also consider using pah (all) in place of any, if you think that appropriate.

For example: "I don't know anything" -> "I don't know any knowledge" -- I'd change this to "I don't have any knowledge" (Zu'u ni piraak naan mindok) or "I have no knowledge" (Zu'u piraak nid mindok). Alternatively, you can say "I know nothing" (Zu'u mindok nid)

Another example: "He does anything he wants" -> "He does any of his wants" (Rok dreh naan do ok laan - naan (do) laanii). That may sound weird, but in-game, laan is used as a noun ("his want/request").

The wolf eats anything. "Eat" is the context, so, you can replace "anything" with "any meat" or "any animal". Grohiik naak pah (The wolf eats all). Fin grohiik naak pah slen (the wolf eats all flesh). Grohiik du naan raan (The wolf devours any animal).

I hope that helps! PM me if you have any more questions (unless you have a login, then just respond)