i have noticed a lot of bs attached to anunnaki when i wanted to research more on this. a bunch of ufo, lizard-people... crap. i am interested in facts, not fiction.
I agree, it's a legitimately interesting subject in the history of religions (and history overall), but there's little to go by that's not, eh, scholarship-free.
But to be fair, mythical accounts of deities, and the impetus for such accounts, is a very difficult subject to approach.
E.g., in the end of the first rhapsody of Odyssey, the goddess Athena is described having "the splendour of the sun" and departing from her meeting with Telemachus by ascending in the sky like an eagle.
I'll accept (and do accept, I'm not mad, I tell ya) all the reasonable explanations - poetic liberty, theatrical engineering with cranes and ropes, and whatnot.
At the same time, it's very interesting (and useful) to try and recreate the mental model that allows for such a metaphor to emerge, to be thought up in the first place, and to identify the cultural and technological triggers that might have caused such a dea ex machina description.
But Graham Hancock-style "research" (read up, smoke up, come up) really doesn't cut it, and I'd rather accept that there's no reachable answer with the currently available archaeological and textual evidence, than try and force one.
So (to close the digression), I think your only avenue is to learn Sumerian and Akkadian and go to the tablets. Shouldn't be too hard, really - I'm not being sarcastic - go for it, they are well-researched languages, grammatical and lexicographical resources are available, and the absolutely best reason to start learning a language is to have a specific question in mind or a specific text that you want to read, it'll push you onward.
Not to mention that by coming into contact with the original texts is the only way to approach whatever of the original meanings is still accessible.
Keep in mind, all this stuff is fiction, sort of magic realism in the garb of documentary exposition, and scholarly dubious research.
But much more enjoyable than hollow earth or flat earth stuff!
My favorite bit of it is the presaging of the Dyson sphere in the “energy grid” that surrounds the earth, limiting life form travel.
Even better than their theory of the moon as a manufactured satellite.
Goes without saying, but I’ll say it anyway: make sure you don’t treat fiction as fact too much :) This stuff can be mentally corrosive.