Just like Troy was thought to be mythical until it was unearthed, Atlantis is likely out there, buried. The trick is digging in the right place.
It’s usually been thought of as near Cadiz; a port city on an island in the river.
An earthquake more or less leveled it.
Nope. Atlantis is 100% FICTION. Now some other city on a bad island might have sunk, islands do that. But it ain’t Atlantis.