If you factor in eligible non-voters, then "neither Democrat nor Republican" wins almost every election in the US. For example, Biden got 51.3% of the vote with 66.6% turnout, which is only 34% of eligible voters. Now ask yourself how many of those 34% were truly enthusiastic about Biden, and how many were just voting against Trump.
I think you're missing the point, which is that neither candidate was truly representative of the public interest. Just like neither Biden nor Trump is truly representative of the public interest. People hold their nose and vote for the lesser evil, but that's not what people want.
The OP said "it probably averages out that half time you're not getting who you vote for and the the other half of the time you're not getting what you voted for". In other words, even if your candidate wins, you lose.
I choose not to take part.
I'll do what I have to to not get terrorised by these people but otherwise I'm done. My family and I will explore our lives with the rest of humanity but no more am I taking serious the dictates of these power structures.
Amd democracy is not necessarily the best that is, like everything else, nothing more than propaganda.
I mean the system IS broken, but choosing not to participate doesn't help. If you do want to protest, vote blank. If you don't vote, you're participating in the idea that democracy doesn't work and should be replaced with a different system.
Democracy isn't perfect, but it's the least worst. The US-flavored democracy is broken but needs the right people to get voted in to change it.