I don’t think DeSantis is charismatic or likable enough to beat Biden. His poll numbers go down as the public gets more exposure to him. He’s starting to shift his messaging from anti-woke to (neo-fascist) populist rhetoric, which may change things. IDK, there’s so many things that could happen between now and the election. I think Trump could beat DeSantis in the primary from prison. A major crisis like a recession would hand the election to the Reps. The Reps could intentionally cause a crisis, by forcing an extended government shutdown or something.
Gold standard at this point in time would be deflationary (if the population is growing faster than new gold is being mined, at least). Deflation incentivizes money hoarding, and disincentivizes loans and investments. Capitalism basically breaks down during times of deflation (investments dry up, people stop spending money on things they don’t absolutely need, companies lay off or go out of business, unemployment rises).