Is mystic Luz DE Maria legit?

So I only just know have come to learn about her and she is a Catholic mystic that currently resides in Argentina I believe and one of the startling prophecies she's been recieving from Our Lady, Jesus, and I think Saint Micheal the Archangel, is that the antichrist is currently alive and walking the earth saying their name is Alex but they will be using a different name.

And other end of the world prophecies one I've seen people mention is WW3.

It seems insane to me but it seems she gave prophecies about covid before it even happen I think back in 2016 where she said she recieved prophecies about a plague that was coming and at one part even said it will come out of a laboratory back in 2016 and stuff. Which as far as I know and understand she recieved a imperitur (forgive for not spelling right) from a nicaraguan Bishop.