There are more non fiction genres than biographies and self-help

non fiction books make me want to kill myself

I usually feel the same. A few notable exceptions I have found:

• [Salt: A World History)] (https://www.markkurlansky.com/books/salt-a-world-history/) - the history of salt is way more interesting than you would think.
• [The Mother Tongue: English and How It Got That Way] (https://en.wikipedia.org/wiki/The_Mother_Tongue) - English is a damn weird language.
• [A People's History of the United States] (https://en.wikipedia.org/wiki/A_People%27s_History_of_the_United_States) - a much more accurate and honest history than the whitewashed version that public schools teach.

I like True Crime. Or how-to's... learning about a subject. Science is great. An easy source of interesting non-fiction is https://arxiv.org/ . ;-)

May I recommend some David Graeber. He was a leftist and anthropologist who had a way with words