As long as the virus is out there at all, it will spread. South Korea which has been the model for some due to low total cases, and has been very diligent as far as mask wear and other measures, has tried to get back to “somewhat” normal and they continue to have spikes and have to reimpose closures and restrictions.
It seems like there is some sort of thought that if we just get to a X number of active cases , that we can go back to normal. That might be true, although I have not seen anyone provide that number, only more generic statements without data.