I feel your pain. I live in such an area, too, where wearing a mask often draws sneers and condemnation. A few weeks ago, a nurse in a hospital lobby went out of her way to inform me that masks aren't required there, and the stink-eye I got when I said "okay" but kept it on was truly Sauronian.
It's so disheartening and so exhausting to witness so many people derive such joy from being giant throbbing dks toward fellow human beings. It really has taken a serious toll on my faith in humanity, and depresses me utterly.
Ugh. I know.
Look, I understand (well, not really, but I fake it) people that aren't doing the right thing.
But the people that aggressively and angrily make a point of going after those of us who are trying to do the right thing? C'mon. If you can't be part of the solution, at least don't be part of the problem.
(That said, a person near and dear to me has the opposite issue- they are positively gleeful that Omicron is going to rip through the unvaccinated. It's some version of covidfreude, I guess?)