Lots mentioned here that I would second.
The Fyre festival one is awesome - the mind blowing stupidity and arrogance of the organiser! I’ve seen it three times and it never gets worse.
A pp also said the basketball version of Last Chance U. I don’t think there are many better made documentaries in recent times. Im not into basketball, but that didn’t make a difference at all.
Another fantastic basketball doc is the Netflix Jordan/Chicago Bull series. Really informative and compelling.
The Fleetwood Max doc by BBC that a PP mentioned is another one that stuck with me, despite not having an interest in the band when I started watching.
There are two incredible climbing docs I saw a couple of years ago. One is called Free Solo and one called the Dawn Wall.
BBCs Legend of Snooker is great - fascinating and a real insight into recent British history and culture.
Ive also just finished Chimp Empire on Netflix which I really recommend. It’s like David Attenborough meets the Wire.
Wild Wild Country on Netflix is the insane story of a cult in Oregon.
Slightly sillier - Tinder Swindler will have you hooked from the start. Also about coercive control is Puppet Master - really terrifying.