Ranked choice voting would go a long way, the two-party system is an intentionally forced false dichotomy like when parents give their kids the choice to eat broccoli or carrots so they’ll think it was their decision. Both parties are controlled by the investor class.
You could even just have straight proportional voting if you wanted, and that's be better than the current system. You got 3 votes? Great, you have a 3/100M chance to win.