I forgot about the BIF in my initial post. Unless people see the effects of the BIF right away in-terms of shovel ready projects, broadband access being turned on in rural/urban areas, roads being fixed, etc. it won't matter Democrats won't be able to sell a bill that doesn't have immediate impacts like the Child Tax Credit did/does or like BBB could if they pass it.
The other thing Democrats need to do is go for broke and just start branding Republican candidates as authoritarian dictators who want to strip away your right to vote. I know I just previously said that a rerun of January 6th won't work, and it won't. But if you are going down, go down swinging, scratching, and clawing until the end. Democrat's need to let the American people know that one party is no longer interested in allowing them to vote or their vote counting. White folks, black folks, Christian, Jewish, Muslim, they want to cancel voting in this country. You talk about the cancel culture argument, that's the playbook Democrats need to hit Republican's with, only on the right to vote. Cancel culture comes to the voting booth because Republican no longer believe in free and fair elections and want to cancel out your right to vote. They won't win on that message, but they can get in a few good blows on the way down to damage the GOP brand further hopefully.