As you wring you hands, soul-searching why the Democrats lost this Presidential election, I hope you come back to read this post.
1. Imperial Hubris. You didn't read the signs along the road. You're so full of yourselves, you just assumed that the average American loves Democrats. No, the average American loves America.
2. Instead of having Biden mentor a viable candidate, you pushed the Biden and Harris ticket.
"At one point, Biden grabbed the hand mic and started walking. He moved toward the side of the stage where one of the five chosen reporters was standing, but it briefly gave the appearance he was abandoning the press conference."
https://www.dailymail.co.uk/news/article-12502853/Joe-Biden-mic-cut-rambling-speech-Indians.html#:~:text=At%20one%20point%2C%20Biden%20grabbed,was%20abandoning%20the%20press%20conference.
https://www.washingtonpost.com/politics/2023/09/11/how-americans-feel-about-kamala-harris-becoming-president/
3. ActBlue pissed off your base.
https://www.latimes.com/opinion/story/2023-02-09/nancy-pelosi-political-donations-fundraising-republican-democratic-campaign-finance-actblue-winred
4. A Dem/Rep bi-partisan ticket would've sent a message. Now you're just the other half of the polarized post-Trump World. If you want to move past a bi-polar world into unity, you need to walk the walk.