Vietnam and New Zeeland have had no flaws. They don't preach, but could be an excellent example of how to do right. https://ourworldindata.org/covid-exemplar-vietnam-2020

And yet there are nonzero number of countries that have had only the smallest number of deaths and controlled community spread almost entirely during this entire pandemic. It doesn't do any good to blame, but we should all be copying as closely as possible what has let some countries emerge unscathed.