You don’t have to read long-winded tomes. You said you came to this forum for such a long time, yet you never saw conservative arguments? Starving Artist posts long diatribes against liberals and he’s fairly representative of American conservatives. He thinks, IIRC, that welfare, big government, and feminism destroyed the family, and that liberal permissiveness in the '60s led to a coarsening of the culture, increased drug use, and a decline in everything from manners to sexual morality.
One reason leftish, collectivist, and “big government” politics is seen as such a threat in America is due to a long history of anti-socialist agitation and propaganda, starting all the way back in the first red scare during WWI, plus the 50 years of Cold War mentality, McCarthyism, and blaming leftist protestors for losing Vietnam. American culture is also, compared to other first world nations, extremely militaristic and religious (in the Old Testament sense). Gun rights are a big deal, with conservatives worried that liberals will confiscate them like the government in your country did. A significant portion of the populace thinks abortion is equivalent to murder and views liberals as baby killers.
If American conservatism seems nutty from a distance, one reason is that during the '90s and early 2000s a confluence of right-wing media sources dominated the narrative, from Fox News to various popular radio shows, which continually pushed the Overton window into unexplored territory of innuendo and conspiracy theories. A big inflection point was 9/11, which caused an uptick in militarism and authoritarian thought, e.g. anyone against the wars hates America; our enemies hate us for our freedoms; torture, spying, and giving up certain rights is necessary; international cooperation is a sign of weakness; and for fun, politicians started calling America “The Homeland.”
Another point of acceleration was the rise of the Tea Party and their response to the Obama administration, which led to the current toxic miasma where global warming is a hoax meant to cripple American industry.
There’s a lot of other stuff too, like the decline of industrial jobs and anxiety around immigration and how they end up voting for liberal policy (hence the yearning for a big, beautiful wall), or how big business fans the flames to chase their own agenda (peace and blessings upon the free market, if it ever existed), or the resentment of a traditional white male populace reacting to the social advancement of women and minorities.
Also some college kids somewhere did a silly thing once, which absolutely enrages some people.