Yes, there are likely some out there. The Star Wars fandom is vast, and many fans like to explore the idea of Dooku's redemption in their own stories. You can start by looking on popular fanfiction websites like FanFiction.net or Archive of Our Own.
Since there's no official story out there, we can only guess. It might center around Dooku's secret missions during his time as a Sith. Maybe it would show how he was manipulating events behind the scenes in the Star Wars galaxy. It could also delve into his unique fighting style and how he developed his skills in the Force, both as a Jedi and later as a Sith.
Well, it would make sense for some of Dooku's fellow Jedi from his early days to be in the story. Maybe Eeth Koth or Plo Koon. They could provide a contrast to Dooku's path. And on the Sith side, Savage Opress could be included. He had some interactions with Dooku. Also, Anakin Skywalker might make an appearance, as Dooku played a role in Anakin's journey, especially during their duels.
One interesting plot idea could be exploring Dooku's early days in the Sith. Maybe showing how he was gradually corrupted by Sidious. Another could be a story where Dooku has a change of heart briefly and tries to make amends in some small way during the Clone Wars, but is quickly pulled back into the dark side by Sidious' influence. A third idea could be a fanfic that focuses on Dooku's relationship with his former Jedi colleagues during the Clone Wars, like how he feels when facing them in battle.
Obviously, Dooku himself is a crucial character. He is the central figure around which the story revolves. Count Dooku is a complex character who transitions from a Jedi to a Sith. Another important character is Yoda. His relationship with Dooku, as his former master, adds depth to the story.
One of the main themes is the fall from grace. Dooku starts as a respected Jedi but gradually turns to the dark side. Another theme could be the exploration of power and how it corrupts, as we see Dooku's pursuit of greater power lead him astray.
Count Dooku's story in Star Wars is quite complex. As a former Jedi, he was highly trained in the ways of the Force. His fall to the dark side was not sudden. There were underlying issues within the Jedi Order that contributed to his turn. Once he became a Sith, he was very influential in the Separatist Alliance. He was able to manipulate many systems to side with the Separatists. He had a unique style of lightsaber combat, which was a combination of his Jedi training and Sith teachings. His relationship with Darth Sidious was one of master and apprentice, though he was often used as a pawn in Sidious' grand plan. Eventually, his actions led him to face off against Anakin Skywalker, and his defeat was a significant moment in the overall Star Wars saga.
In a Dooku - centered fanfic in The Clone Wars, Qui - Gon Jinn could be an interesting addition. Even though he's dead, Dooku could be haunted by memories of his former apprentice. This could add an emotional layer to the story. Count Dooku's own family members, if any are explored in the Star Wars lore, could also be included. Their influence on his decisions, or how he thinks about them while being a Sith, could be fascinating. Also, other Sith Lords or acolytes that Dooku might interact with in the shadows during the Clone Wars would be cool to include.
One interesting Count Dooku fanfiction could be about his early days in the Jedi Order before his fall. It might explore his relationships with other Jedi, like Yoda. Maybe it shows his gradual disillusionment with the Jedi Council's decisions.
In a fanfiction where Count Dooku lives, he might decide to go into hiding. He could find a remote planet and start training a new group of Force - sensitive beings in a way that combines the best of the Jedi and Sith teachings. This new group could be a force for balance in the galaxy.