Wes Craven had nothing to do with the first sequel, A Nightmare on Elm Street 2: Freddy’s Revenge (1985), as he didn’t believe that Elm Street was capable of spawning a franchise. The success of the second film, outgrossing the original, convinced him otherwise. (From https://www.imdb.com/title/tt0093629/trivia)

From Screenprism.com