https://www.vulture.com/2018/11/sally4ever-julia-davis-hbo-review.html

The British comedy from Julia Davis, whose Camping inspired the recent Lena Dunham-Jenni Konner HBO remake, will test you when it comes to its squirm factor, says Jen Chaney. "In one way or another, everyone on Sally4Ever is unhinged," she says. "If you think you can handle that cringe humor and plan to watch, just make sure you have plenty of elbow room. Trust me, you’ll need plenty of space to do all that inevitable squirming."

ALSO:

Julia Davis finds humor by running a knife right through you while laughing (https://www.hollywoodreporter.com/review/sally4ever-review-1159741)
Sally4Ever forces characters as horribly recognizable as real people in the viewers’ face (https://variety.com/2018/tv/reviews/sally4ever-review-hbo-julia-davis-1203023147/)
It’s an unflattering, fluorescent light on the manifestations of human self-interest and weakness (https://www.nytimes.com/2018/11/08/arts/television/sally4ever-review-hbo.html)
Davis explains why there are two sex scenes that are more explicit than anything you'll see on American TV (https://uproxx.com/tv/julia-davis-interview-sally4ever/)