Was There a Civilization That Predates All Other Known Ancient Civilizations?

My favourite "conspiracy theory" I would answer "yes" despite "lack of proofs",because it is very possible that after social collapse wiping out 99,9% of population (especially in cities) we would begin from zero,it would be return to stick and stone within few generations. That would explain knowledge of ancient civilizations so well like "aliens",or even better.

https://www.youtube.com/watch?v=xtJ49gXWwA0&feature=emb_rel_end

Was There a Civilization That Predates All Other Known Ancient Civilizations?

My favourite "conspiracy theory" I would answer "yes" despite "lack of proofs",because it is very possible that after social collapse wiping out 99,9% of population (especially in cities) we would begin from zero,it would be return to stick and stone within few generations. That would explain knowledge of ancient civilizations so well like "aliens",or even better.