How does one go about looking for a Specific Fc? (Omega)

I am looking for a Fc that has more majority ''Older Players''
That does all kinds of Social Fun Activities with players like Group content in all shapes and form.
I am very! new to game, so still trying to find my feet in the game. But i do wish to find a guild/Fc that has a nice relaxing active fun Atmosphere with older players.
I would appreciate anyone getting in-touch.