[toast0]

If you're looking for temporary respite, I have some suggestions.

In my area, sensory deprivation 'spas' are coming back, there's a (local?) chain called float that has been advertising.

Recording studios are heavily sound isolated, and most cities have some. Sort of odd to book an hour and just sit, but maybe they've got some weird holes in their schedule.

If either of those two work, and you have control over your living space, you could pursue home versions of that.

A weekend trip to a nearby national park or the like can be pretty quiet.

Personally, I live in a semi-rural area which reduces the human noises to mostly only my family. But there's still airplanes of all sizes flying overhead, and really loud vehicles far away, and ferry horns. My neighbor's dog sometimes gets in our yard and barks and I can hear our rooster and at least two neighbors (they crow all day, not just at sunrise). Then there's birds and coyotes and what not. Not entirely quiet but close.