sons-of-God?

Week 1  Genesis 6

A year ago I read the story of the sons-of-God & daughters-of-men. I didn’t know what to make of it then so just figured I’d let-it-be.
So anyway by pure luck this week I chanced on a reading that sounded like Genesis 6. It’s in The Book of Enoch. Part of it said: and it came to pass, when the sons of men had increased, that in those days there were born to them fair and beautiful daughters. And the Angels, the sons of Heaven, saw them and desired them. And they said to one another: “Come, let us choose for ourselves wives, from the children of men, and let us beget, for ourselves, children”…And they took wives for themselves, and everyone chose for himself, one each. And, they began to go into them, and were promiscuous with them. And they taught them charms, and spells, and they showed them the cutting of roots and trees. And they became pregnant and bore large giants.
At first I really thought I was onto something. Enoch’s view that the sons-of-Heaven were bad angels is a detail that’s a bit fuzzy in Genesis 6. Maybe Enoch’s right. But what about other details? For instance Enoch names 18 bad angels. Is that actually correct?
Managing the bible’s own data is hard enough without adding unknown ingredients to the mix. I figure I’m no farther ahead than I was last year.

Note: quote from The Book of Enoch 6:1-7:6 translated by M. Knibb 1978 (http://www.bookofenoch.org/ENOCH-McCracken2020.pdf)