I haven’t watched Star Wars: The Clone Wars, but in there and in some comic/books it is explained that Count Dooku actually never was a Sith, he simply grew apart from the Jedi Order because of the decisions they were taking, basically becoming a Shogunate in the Republic, which ended up being one of the cornerstones for the fall of it in the hands of the Empire. He allied with the Sith in order to transform the Jedi but it backfired him.
I haven’t watched Star Wars: The Clone Wars, but in there and in some comic/books it is explained that Count Dooku actually never was a Sith, he simply grew apart from the Jedi Order because of the decisions they were taking, basically becoming a Shogunate in the Republic, which ended up being one of the cornerstones for the fall of it in the hands of the Empire. He allied with the Sith in order to transform the Jedi but it backfired him.
Yes, basically at some point just wololo as usual