Why are you so convinced that no one wants Biden to run again. It has been interesting how quickly potential challengers like Gavin Newsom have lined up behind him. If its Biden vs. Robert Kennedy Jr. and Marianne Williamson are the only ones who have lined up to challenge him then clearly someone wants him.
By the way, I'm curious whether you listened to Five Thirty Eight's podcast where they tell us it is far too early to worry about these poll numbers. https://abcnews.go.com/fivethirtyeight/video/early-trump-leads-biden-fivethirtyeight-politics-podcast-99181229