Klaxon sound Wrong!!!
The way to fight this is by voting and participating locally. Third parties are getting elected and alternative voting methods already exist in a few locations around the U.S. you can help by voting in more systems like that and maintain the candidates and systems you like locally. If we could get more people like you to participate locally we could actually get something done.
You’re problem is you want to live at the end of history and unfortunately for you we’re forever in the middle of it. Local action is the most effective and relatively slow. Instead you want to enable the larger of the two fascists that will inevitably be elected and then throw up your hands when it doesn’t work, blame everyone else, and never take any effective action locally.
My advice doesn’t prevent anyone from voting in their local elections… In fact the two can be used together for the more zealous types.