Democrats: If we can't win the Senate after a Biden slide, what's the strategy going forwards?

[Coolface Sock #42069]

The 2016 election featured multiple red and swing state seats that were winnable such as Missouri, Wisconsin, and Pennsylvania. The Democrats chose to deprioritize those states in favor of wasting money in New York (Schumer was head of DSCC) and Florida (did they really think they were going to take down Rubio?). Ron Johnson especially should have been beatable since he wasn’t a particularly strong politician and Trump barely won his state. If Dems won those three seats they’d have a majority right now.