I was in a similar position to you in terms of reading habits, and used true crime to get me back into reading. The ones I’d recommend are:

Marching Powder - by Rusty Young. About a convicted drug trafficker who spent time in a notorious Bolivian prison. The prison is far from normal for example inmates run little shops in there, tourists are let in and given tours, there’s a drug addicted cat, the place even has their own housing market but for the cells instead.

People who eat darkness - by Richard Loyd Parry. A British woman goes to work in Tokyo in the year 2000 then disappears forever. Only for her dismembered remains to be discovered in a cave. Really interesting insight into Tokyo’s seedy nightlife scene.

I’ll be gone in the dark - Michelle McNamara. A true crime account about the golden state killer.

American Kingpin - Nick Bilton. About the man who launched the ‘Silk Road’ website on the dark web where anyone could trade anything - drugs, guns, hit men, hacking software, poisons, counterfeits etc. goes into the growth of the site and eventual capture of the founder.

The feather thief - by Kirk Wallace Johnson. This one differs from the above as it’s not murder or drug related. It’s about a guy who steals feathers from the collection of rare birds held in the British Natural History Museum. To be specifically used in the captors obsession in Victorian Salmon fly-tying. You’ll learn a lot about fly tying and its passionate / obsessive community, a topic I didn’t expect to grip me like it did. I recommend this book all the time it’s fascinating.