The moment he died in the real and fake Monkey King, he used the fragments of chaos as a guide to travel through the wilderness and start over.
Sun Wukong was reborn with the broken memory of the prophet, and discovered that behind Hongyun's death there was a shocking conspiracy spanning three tribulations - from the Second Saint of the West to the Taoist ancestor Hongjun, all living beings were pawns in the layer-by-layer layout. He thought he could control the overall situation this time and use the advantage of the unpredictable to reverse everything, but he found that the fragments of chaos were incomplete, misunderstandings and truth were mixed, and every "known" layout collapsed at a critical moment. He does not want to become a Buddha again, because Buddhism is the one who holds the reincarnation harvest. He wants to become brothers with Hongyun and Zhen Yuanzi, share the same fate with Jiejiao, and use his flawed self to fight against the seemingly perfect machine of heaven.
In this life, he did not accept the script that was arranged. This time, he chose not to become a Buddha.