Complex sentence: Despite Jackson performing multiple songs from his "Thriller" album, "Thriller" was not included on The Jacksons set list during their Victory Tour in 1984, as he wasn't satisfied with the way the song sounded live.
Split into simpler sentences: Despite Jackson performing multiple songs from his "Thriller" album, "Thriller" was not included on The Jacksons setlist during their Victory Tour in 1984. He wasn't satisfied with the way the song sounded live.