The 'system' is now politics mixed with social media with a healthy dose of MSM to round off the propaganda. This is reality. You're dealing with a lot of magaturds of the boomer (70+) persuasion here. Magaturd minds here are set in stone. Maybe read the room a little better.
The system is First Past The Post.
In 2017 in the German Federal elections, the CDU/CSU gained 37.27% of the votes, but got 77.5% of the seats.
Why? Because of negative voting. People were voting against the other party, rather than for the CDU/CSU. A lot of these people didn't want to vote CDU/CSU at all. We know this because the Germans also vote Proportional Representation at the same time, and 2 million of those voters who voted for CDU/CSU with FPTP did NOT vote for them with PR.
In fact the total percentage of seats the CDU/CSU gained was LESS than the 37.27% of the votes they got with FPTP, because they lost so many votes their seat allocation went way down.
We know FPTP benefits the main two political parties. In Germany the number of votes that change from FPTP to PR is up to 10%, and they're almost always a 10% drop for the main two parties and a 10% rise for the third parties.
In the US, we can see this happen. People will go out and vote. They look at the chances of one party or another winning. Perhaps they're Libertarian, and they know the Libertarians (as the third largest party in the US) has NO CHANCE at all.
They have zero governors
They have zero senators
They have zero members of the House
They have zero state senators
They have one state house member (Jarrod Sammis in Vermont) and guess what, he was elected as a REPUBLICAN and then switched and will lose his seat and never again get back into the state House.
They have 322 other elected officials (think dog catchers).
So, many Libertarians will think "hmm, I don't like the Democrats", so they vote for the Republicans. They probably don't like the Republicans either, but what choice do they have?
Vote Libertarian, get Democrats. Vote Republican, get Republican.
Which do they prefer?
In Germany they could vote Libertarian and know their vote counts, but the US doesn't have DEMOCRACY. So, they get to vote for two asshole parties.