If Biden wins, what do you expect to happen with all the MAGAs?

They will continue to exist, though weakened, and four more years of Democratic executive actions and appointments will steadily move the federal government further away from their position.

How would you prevent another Jan 6th? What if it succeeded this time?

Electing Democrats to critical state roles in 2022 helped a lot here. It's also useful having the election denier as the challenger, not the incumbent, plus we're all wise to their playbook. The multiple prosecutions of last cycles conspirators should also put a damper on things.

How will you keep Biden accountable?

Protests, op-eds, pressuring legislators, primary elections, etc.

Will you keep avoiding a fascist dictatorship every 4 years until the end of time?

Yes. Democracy requires active maintenance, from all of us, indefinitely. Giving up is how its enemies win.