This is my post about north africa/mediterrenean/Ottoman pirates, I have suggested couple of things and found some books to read and improve the mod.

https://forum.paradoxplaza.com/forum/index.php?threads/admiral-barbarossa-john-ward-jan-janszoon-and-formable-barbary-pirate-state-possibility.1083790/

public domain book: The Barbary Corsairs by Stanley Lane Poole, planning to read from pdf
Pirate Utopias: Moorish Corsairs & European Renegadoes by Peter Lamborn Wilson (Hakim Bey), just bought Turkish translation of it, planning to read in my free time.