How Did Atlantis Exist

The lost city of Atlantis, a mythical island which supposedly sank beneath the Atlantic ocean, hence the name 'Atlantis', was a fictional place thought up by Plato. Plato first introduced Atlantis around 330 B.C. in his works 'Timaeus' and 'Critias'. Some people belive the people of Atlantis had far more advanced technology than we have today, like flying cars for example.
If Atlantis exists and was found, the residents would probably try to enslave or kill us, so it's clear Plato made up this place for his stories.
Also, there's no record of it, surely if it existed there would be record of it somewhere. There's simply no evidence of it anywhere before Plato wrote about it.
Despite Atlantis' clear origin in fiction, a lot of people belive