it is said that independent and impartial judiciary the base for the democracy prepare an editor iol focasing on the importance of judiciary to prevent impannity and providing justice to victims

An informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.