Meh.
IMO, the problem is that Dems aren't focusing on the economy in the correct way. Yeah, Biden did some good things. But you've still got massive wealth inequality, high rents and home prices, venture capital firms buying up small companies and jacking prices way the fuck up, executives raking in huge profits and salaries while laying off workers, etc. Dems keep saying, "the economy is great!" while working class people--the vast middle class in the US, which includes mid-level white collar jobs--are feeling like they're working hard for less. Ever since the crash in '08, jobs have been less stable, and people have been turning to gig work to make ends meet, or to have anything extra in their budgets. Sanders is the only left-leaning politician that's really banging on that drum.
Dems used to be out there running for good jobs for hard working people, work with dignity that you could live on. But they've been ignoring their roots for the last 40 years, and have been bought and sold by corporate America. The liberlization/globalization of the economy [EDIT] has largely been a disaster for working-class people, as they've been forced to compete against lower-wage workers, while the capitalist class gets even larger profits. (OOH, the liberalization of America's trade policies has resulted in millions of people outside of the US being able to live in something other than grinding, abject poverty.)
In addition to that, Biden's debate performance was a fucking disaster, and made it very, very clear to everyone that he was absolutely not fit to be president. Harris should have put some distance between herself and Biden, but she couldn't, or wouldn't; she was suggesting that we continue the same policies that are squeezing the working class, rather than calling for systemic reform.
Meanwhile, Trump was promising that he'd make foreign companies pay, and that he'd bring good jobs back. If you're a low-information voter that doesn't understand how tariffs work, and don't think about the logistics of bringing all the manufacturing back, then this sound great.
Meanwhile, you've got the whole right wing media machine telling people--mostly men--that they're right to feel screwed. And yeah, they are. It's just that it's not 'libs', women, typical immigrants, etc.; it's corporate profiteering, trade globalization, the loss of power from unions, importing highly-skilled labor to displace higher-paid American workers (e.g., H1-B abuse), outsourcing everything, etc.
If Dems want to win, they need to get serious about good jobs that pay a living wage for middle America, putting a choke-chain on corporate profiteering, and rebuilding the power of labor.
No. Last I knew, PET (?) scans appear to indicate that decisions are reached by your unconscious mind before they're made by your conscious mind; the implication is that what you believe is you making a choice is actually you rationalizing a choice that's been made through processes that you can't directly see or affect. IF that's correct, then people are quite deterministic, as long as you know all of the inputs.
But on a practical, day-to-day basis, calling it 'free will' is a convenient fiction or shorthand. While free will may not exist, we largely believe that it does, and our perception of that in turn shapes our perception of reality. So it ends up not really mattering, strictly speaking.