Complex sentence: The forfeits also returned to the show, but they were not chosen by the celebrity guests: they were automatically chosen by the crew at the end of each show for the celebrity who got the lowest score in the show.
Split into simpler sentences: The forfeits also returned to the show, but they were not chosen by the celebrity guests. They were automatically chosen by the crew at the end of each show for the celebrity who got the lowest score in the show.