Are you insane? There are tons of countries that are not totalitarian, with big land borders, that have done far better than the US .... There are obviously thousands of things that could have been differently and or better.The latter part doesn't follow logically from the first. It can be that performance is essentially random, or determined by geographical factors, or by the pre-existing health of the population, and so on. The assumption that governments can control respiratory viruses like SARS-CoV-2 is at the heart of all of this but needs very strong evidential support, given how strong the evidence against this belief is by now.
If you look at the data then there are no obvious explanations for why some countries did better than others. It's far from insane to observe this. There are a lot of plausible sounding explanations but they all fall apart due to exceptions, e.g. Japan did very little for a long time and yet has hardly been affected. In fact Asia in general has not been strongly affected (Taiwan is another example) despite a wide variety of response severities, which raises the question of whether Australia/New Zealand's relatively good performance is due to location rather than behaviour. Meanwhile Latin America was very hard hit despite some truly totalitarian responses by the authorities.
Your own explanation is especially weak because it appears to be based on a cartoon New York Times interpretation of what happened outside the USA. The British government's messaging was the polar opposite of Trump's. The PM appeared next to two chief scientists every single day, and the government was basically replaced by SAGE, the scientific advisory board. The SAGE scientists took total control of the messaging including designing large scale ad campaigns specifically designed by behavioral psychologists to provoke as much fear as possible in the population. The UK also has by far the highest vaccine uptake in the world. The whole thing had a singular focus, the messaging was very well organized to an extent that evokes people's worst fears of competent totalitarianism and so the idea that the UK was somehow doing the same things as Trump just has no basis in reality.
Yet, in the end, it didn't seem to matter. Sweden has had lower excess deaths despite consistent year-long messaging of chill, relax, it's no big deal. Hence, politics can be pretty conclusively eliminated as the source of any differences.