Everyone is a little bit authoritarian. It's the intent and end result that gives it meaning. You don't see France being criticised these days do you despite their citizenry being vocal about their regime's mismanagement. We've even seemingly had a Western media blackout effectively on it for the past month (they've had riots/protests).

Name one country that's not authoritarian

How much control do you really have over a government that only has two parties? FPTP is a failure. It leaves government without accountability, pisses on the principle of equal representation, and shifts power towards the few areas that may actually flip.

If you lose this federal election, so what? Eventually, people will get angry enough at the current ruling party to flip.

If you vote, so what? Unless you're in a swing state, your vote might as well not exist for the presidential election.

What about representation in the house? Well, again, your vote doesn't really matter unless you're in a swing district (which tends to be suburban). If you're urban (liberal) or rural (conservative), you might as well not vote either.