You’ll get a thousand different opinions about what the days of Noah means.
We know it was violent (Genesis 6:5)
Thoughts of mankind was violence all the time (Genesis 6:5)
Apparently hybrid humans were everywhere (Genesis 6:1-4)
Demonic hybrid humans (Genesis 6:1-4)
Maybe even animals?
Interesting to note that Genesis 6:9 differentiates Noah as being righteous and blameless among the people of that time.
Was it because he believed in God? Or that his DNA was pure? Still practiced sacrifice?
Jesus never really elaborates on those times in his “days of Noah” message.
Maybe all of the above. We could spend months talking about it. Even many true Christians I know, think I am out of my tree, for my views on the Nephilim. I think it has given me a deeper understanding of the constant struggle between good and evil.