Are you saying the country has too many people, or that Americans don't deserve representation (population per seat) in line with, say, Japan, South Korea, Mexico, or Australia because it's "really hard" for some reason? Are you advocating for dividing the country into smaller legislative districts?
Remember when we used to do things because they were hard instead of falling back on lazy cynicism and convenience of status quo?
The U.S. seems stuck with the two party system primarily due to the mathematics of the Electoral College and lack of ranked choice voting. These require changes at the state level, not federal.
16 states and DC have now opted out of the Electoral College (https://en.wikipedia.org/wiki/National_Popular_Vote_Intersta...). RCV is now in place for state-wide elections in Maine and Alaska, but recently banned (seemingly as a partisan protectionist measure) in Florida, Tennessee, South Dakota, Montana, and Idaho.
Gerrymandering and lack of a mixed electoral system also seem major factors for the political duopoly, with less clear solutions to me.
