I've repeated this often and I will repeat it again: Short selling is so hard, that if someone actually gets it right, they make a movie about them.
And it turns out that if you get it right, it's more a case of luck and timing than skill, because none of the people in the movie have done it again and none of the famous short sellers make money.
Don't short.
Michael Burry was in the news lately for filing a 13F showing large put option positions in Palantir and Nvidia. That seemed to get the market's attention as both have since struggled but what many commentators missed was that the positions were for Q3, which ended September 30. He was deep underwater on those puts and even with the large drops in both lately, he still is.
In any case, he's throwing in the towel and will convert to a family office.
Now there is something to be said about shorts throwing in the towel at the peak of the bull market...