If you don't hang around in enclosed spaces with other, potentially infected, people, you can avoid getting infected.
You think that you can't get infected if you don't "hang around in enclosed spaces with other, potentially infected, people"?
There are two ways to achieve "tribal immunity". One involves everybody getting sick, and many thousands dying. The other is called a "vaccine", which is much safer. Why do some choose death over life?
False dilemma.
There's a third option.
Follow proper quarantine procedures for those who are sick, and allow the rest of society to go about their daily lives as normal.
Locking down healthy people up in the same locations as sick people does not do that, mask or no mask.