If I was going to Reincarnate why could I not have reincarnated as a Dungeon

this is the story of a man hue reincarnated in a fantasy world but wished he had reincarnated into a dungeon. He would have been willing to be a dungeon master but how is that going to happen when you half to touch a dungeon core to become its master. This story will look at some isekai and dungeon core tropes from the perspective of some one who cant use them hopefully in a fun and interesting way.