Whatever one thinks the optimal response to a pandemic should be, the fact that several nations of western Europe (e.g. France) with much different policies, have per capita mortality the same or higher, suggests that the policies used were not a major determinant of the outcome.

If you plot per capita mortality for France and Sweden, they are almost identical, swapping places five times so far. Currently Sweden is slightly lower, but really they're about the same. France and Sweden have policies at the opposite ends of the spectrum. If the differences between those two countries are not enough to make a measurable difference in mortality, then none of the policies used in western countries are making a significant difference one way or the other.