Some countries have developed immunity and the mortality rate is small compared to the population.
The essential thing is that we are learning more about this epidemic and the next cost will be cheaper.
Yes some countries don't suffer the covid-19 pandemic as others that have severe consequence like India, US and few others. Like in Africa too except for South Africa that has quite some number of cases, many Africa countries are not having cases plenty of cases as other third world's and some European countries. So I think solutions should not be generalized and route causes of increased cases should be looked at inwards.
Because the citizens and the government are cooperating with each other that's why we see some other country easily beat up the covid-19 and came back to their normal lives. Solutions will never be generalized since not every human being can able to cope the suggestion and possible solution given and the only thing that can save the humanity in this pandemic is the vaccine and hopefully it will be available next year.