Well, your game is at least unquarantined now.
As far as I remember reading, staff removes fake ratings in bulk. For that they need to agree it is a fake rating.
I do not know how Itch views some people deciding to up or downvote the same thing. That might happen by some youtube comments or people talking about it in discord.
If some of those accounts are genuine, you might want to reconsider posting user names. Ratings are not really public on Itch.