There is exactly zero chance that the US can go back to what it was as a result of a single election.
Structural change is needed, which is unlikely to happen, and the depth of the destruction of the machine of government cannot be rebuilt in less than a decade, and that's just the foundation upon which reputation is then built.
Just to let you know, an argument can be made that this was exactly the intent.
All stable democracies derive a goodwill by honoring certain values even if a previous political party made them.
This is intentionally being thrown out of the window for what the other side perceives to be something done to them (arresting Trump, assassination attempts). Which the first side can justify on the grounds of what was done to them (Jan 6th), which is the other side can justify on the grounds of what was done to them (2020 election issues) and so on.
Any attempts to look for the "source" of the problem (i.e figuring out who started it) is choosing a side and not trying to solve the problem.
Structural change is needed, which is unlikely to happen, and the depth of the destruction of the machine of government cannot be rebuilt in less than a decade, and that's just the foundation upon which reputation is then built.