What is the ruling on a married person who does not have intercourse frequently practicing masturbation and watching pornographic films?

You must repent from watching pornography and masturbating, as both are forbidden. Your wife must respond to you if you call her to bed, unless she has a valid excuse, and you should explain to her your need for chastity. If your wife does not help you maintain chastity and you are unable to marry another, then it is permissible for you to masturbate with her hand, or enjoy her in a way that does not harm her. If this is not possible, then you must be patient and strive for chastity, fast frequently, guard your hearing and sight, stay away from places of temptation, and occupy your time with beneficial deeds, while seeking Allah's help.