Was Atlantis an ancient ET civilization?

 https://nationalufocenter.com/2024/05/filers-files-may-1-2024-was-atlantis-et-alien/

How many hightech civilizations could have risen & collapsed on a 4.5 billion year old earth? 

https://en.wikipedia.org/wiki/Silurian_hypothesis

https://www.cambridge.org/core/services/aop-cambridge-core/content/view/77818514AA6907750B8F4339F7C70EC6/S1473550418000095a.pdf/div-class-title-the-silurian-hypothesis-would-it-be-possible-to-detect-an-industrial-civilization-in-the-geological-record-div.pdf

https://www.theatlantic.com/science/archive/2018/04/are-we-earths-only-civilization/557180/