There is actually a rather good explanation, but we will only see in about a year's time as to who was right in the end. Many at the frontline of this disease, particularly scientists who have autopsied Covid deaths, are of the opinion that a majority of Covid fatalities would have likely (and sadly) died within about a year's time anyway. People like Johan Giesecke strongly believe that with or without measures ultimately a similar number of people will die in every country - just more or less pread out.
I have to emphasise that from very early on there was consensus amongst experts only on one thing: that this virus could not be stopped, that more or less everyone would get it at some point. But that the spread could be slowed down so as to not overload the health care systems. There are studies that show that things like social distancing, working from home, cancelling large events did enough to slow the spread. And that measures such as restricting the movement of people and closing schools did very little to slow the spread.
The suggestion was never that no measures should taken. The suggestion was only ever that reasonable measures would be taken to slow down the spread (flatten the curve) to relieve health care systems. The notion to stop this virus was never, ever on the table. So: social distancing, cancelling events, etc. yes. Lockdowns no, because disproportionate to the threat.
Yes, the virus is a real problem, and thousands of people dying is sad. But if the above is true, and many of them would have died within a year anyway, then we have to start putting the extremely negative long-term effects of lockdowns into perspective. The resulting economic downturn will directly impact the health outcome for a generation to come. Plus, we created an estimated additional 500,000 homeless in the US alone. Thousands of people have missed medical appointments, illnesses went untreated and undiagnosed while people were locked up at home. So we will see increased indirect deaths. And sorry, but if you look at just how many people die globally every year from other diseases and appalling circumstances, then the number of Covid deaths really isn't that tragic.
I do not want to dimish the pain this disease has caused, but the numbers simply have to be put into the context of reality.
Ps: case numbers going up is not a reaonsable indicator. It has to be taken in context with rate of hospitalisation and deaths. Overall deaths are going down. Case numbers are partially going up due to increased testing, and due to the way these tests are conducted (i.e. the tests pick up even dead virus cells in people who are immune against the disease and therefore don't spread it). I hope this helps somewhat.