You don't appear to realize that food gets to your front door via a large and complex supply chain that involves many people doing things physically together at almost every point. Your definition of a lockdown is physically impossible even for cave men to sustain, let alone an advanced civilization. It isn't merely a matter of "works but insufficient".

This kind of completely irrational reasoning is exactly why lockdowns are now discredited. The fact that the response to "here's lots of data showing that lockdowns didn't work" is to demand an impossible level of lockdown that would kill far more people than COVID ever could simply through supply chain collapse alone, really does say it all.