The Democrats are that one homely kid that gets picked last for dodgeball.
The Democrats are so unpopular that TheOnion articles look like NY Times headlines.
Consider this headline for a moment: Republicans now prefer Kim Jong Un to Nancy Pelosi
Now before you say, "That's just crazy Republicans," please note the party's favorability rating.

The partisan HuffPost used to keep track of the Dems favorability rating, until it took a dive after the 2016 election. Just a coincidence, I'm sure.

Well, just because the HuffPost doesn't track it anymore, doesn't mean there aren't polls being taken.

Favorable views of the Democratic Party have dropped to their lowest mark in more than a quarter century of polling, according to new numbers from a CNN poll conducted by SSRS.
Only 37% of Americans have a favorable opinion of Democrats, down from 44% in March of this year. A majority, 54%, have an unfavorable view, matching their highest mark in polls from CNN and SSRS, CNN/ORC and CNN/USA Today/Gallup stretching back to 1992.
The rating includes low favorable ratings from some core Democratic groups, including nonwhites (48%) and people under 35 years old (33%).

In case you thought that this six month old poll was an outlier, consider this poll from March.

Those are horrific numbers, especially with the young and the Hispanic, and the trend is even worse. There is no scenario that the Dems can win unless they win big with the young and Hispanics.
So what are the Dems doing wrong?
For starters, they continue to stand by their corrupt and failed leadership that has led them to ruin.

More than twice as many respondents to this week’s Economist/YouGov poll said they would prefer another Democrat lead the party in the House than current leader Nancy Pelosi. Fifteen percent backed Pelosi compared to 32 percent who chose “some other Democrat.”
...The respondents’ preference for new leadership was noticeable on the Senate side as well, albeit by a smaller margin. Twenty-four percent of those polled chose “some other Democrat” to lead the party in the chamber to 17 percent who backed current leader Charles E. Schumer

Quite clearly, the Dem leadership has put their own interests ahead of their party. Which is something to keep in mind when the Dems try to voter shame.
Secondly, the Dems are too obsessed with Identity Politics.

51% of Likely U.S. Voters agree with Matt Flynn, a former Wisconsin Democratic state party chairman, that "our party right now ... is pickled in identity politics and victimology. ... There is no assimilation of the party anymore." Just 23% disagree, while slightly more (26%) are not sure.

Even 44% of Democrats agree that their party “is pickled in identity politics and victimology.” Thirty-two percent (32%) don’t agree, but one-in-four Democrats (24%) are undecided.

It's the ultimate example of failure when the Dem leadership pushes Identity Politics, but fails to win over the Hispanic vote.
Other than comfortable liberals, who are the Dems talking to then?

If there’s one thing voters across the partisan spectrum strongly agree on, it’s that most politicians these days are more interested in campaigning on what divides the country. Seventy-six percent (76%) of GOP voters believe that to be true, as do 77% of Democrats and 81% of unaffiliated voters.