how come the people were so sucked into the show by Christof instead of wondering how he is really how come they are manipulated by the truman show so easily thats the same with the hunger games

People wanted to think they were voyeurs watching a life unfold. The viewers did not want to think that anything was staged or manipulated by the show's producers. In this massively ironic experiment, the illusion of Truman's life became the part of the reality for millions of viewers. Viewers incorporated Truman's narrative into their own lives.