I have never studied Atlantis in depth but a few things are obvious. First, Plato’s account cannot be accurate. Second, no one really knows where or even if it existed.
I do think Plato was referring to a specific place. I always thought Crete fit the description better than any other place.
I also always thought Tarshish was ancient Tyre or at least Phoenicia.
“never studied Atlantis in depth” — heh heh... okay, g’night...
...anyway, if Plato’s account can’t be accurate, there’s no point looking for Atlantis at all. Trying to find it other than where he said it was amounts to looking on the sidewalk by your car for the glasses you lost in the dark restaurant, simply because the light’s better. :’)