I know that my question is related to the question Point of the Dothraki's attack. I'm posting a new question as I couldn't find my answer in there.
In the Game of Thrones episode "The Long Night", when the Dothraki charged with their flame scythes they were slaughtered by the army of the dead and not a single Dothraki was shown in the later fight when the castle was breached.
Does this mean that our beloved Khaleesi lost all of her Dothraki hordes?