There is no coming back from this to be honest. America has been a silent Oligarchy (a government by the few, for the benefit of the few) for a long time and now its just mask off... and unfortunately, the large majority of Democrats have had no interest in making meaningful change, let alone undoing these highly damaging policy changes like Citizens United and everything after that.
Kakistocracy: Government by the least qualified or most unprincipled citizens - also comes to mind here. No one in the upper levels of government care about anything other than enriching themselves at the behest of corporations, and at the expense of everyone else's wellbeing and livelihood. Instead we get vapid shallow identity politics and "culture war" garbage, and every once in a long while we get a gutted out compromised bill that addresses 1/1000th of the problem... only to be later overturned despite it being wholly ineffective.
I just don't see the government, in this state, ever having the faculties or incentive to "fix itself." These institutions and "norms" are irreparably broken, and some people still insist on holding them in the highest regards like they are some infallible mandate.