Why there are no good videos on Open Ruy Lopez for Black? Is the variation too bad for Black? There are lots of videos from the White side, but I did not find any good videos from the black side; why is it so?
Why are you looking for video? How about looking for a game? Checkout chessgames.com then search for Open Ruy Lopez ECO code to look for games won by black. It will show you how black piece should play against open Ruy Lopez