What would you expect a competent opposition to do?
(1) Actually have a coordinated plan would be the starting point.
(2) If the left truly wanted to help the American people like they say they do they need the programs they enact to actually work. Say what you want about Trump but he is effective. But then again, all authoritarians are.
Currently there isn't much they can do, but they handed the election to a corrupt buffoon. Inaction the border & immigration, letting the woke crowd run rampant with their nonsense(not talking about it doesn't make it go away), and selecting a VP that if ever tasked with running for President--wasn't likely to win.
Be better (like doing it at all) of saying what they have accomplished. People don't know what they zone know. Make a list of things accomplished and say it out loud. Humility could be another way that democracy dies.
Select a candidate that would not lose to Trump.
Have any sort of policy position and not run on the "at least I'm not him" platform.
In an era where Republicans are dismantling the government do you know what Dems will run on? That's right, dismantling the government, but in a kinder gentler way (see Ezra Kline's abundance agenda).
Dems are anemic to running on popular positions. Raise the minimum wage, expand Medicare, restore the institutions Republicans are dismantling.