If COVID is here to stay and previous lockdowns still did not stop the spread, even with vaccine rates at almost everyone, how is another lockdown going to stop

If COVID is here to stay and previous lockdowns still did not stop the spread, even with vaccine rates at almost everyone, how is another lockdown going to stop it? This isn't just ignorant "muh freedoms" talking here but irrational governments playing god too much as if they could even possibly do that that without complete fascistic control.