"To Agitius, thrice consul: [...] The barbarians drive us to the sea, the sea drives us to the barbarians; between these two means of death, we are either killed or drowned."
my quote was an example how people were quite acutely aware of the collapse around them. wiki link just a reference for the quote.
It's it is not, however, a desperate letter talking about the collapse of a civilization. You would be able to find similar letters begging for Romes intervention during Romes reign.
It's not proof of anything even close to awareness of the collapse of civilization.
which ones specifically then?
and more importantly, its not just this letter, as i mentioned above the whole gildas’ de excidio goes explaining in quite detail the sudden and devastating effect of the collapse of roman authority in britain.
do you have any evidence to back up your insistence that majority of the population went on like business as usual?
And no I don't have any examples handy that I can point to right now, but I am sure there are plenty if you dig a little.