An actual Pirate story would benefit tremendously from detailed and interesting worldbuilding. Not every pirate has lived on the same coast from birth. Pirates are basically sea raiders anyway, renegades who could be on the run from the law. You can have countless different backgrounds for your characters based on where they came from, why they became pirates, how their interactions at sea shaped them, clashes between rival shipping companies from different companies, battles and disputes at sea and at port for resources and monopoly.
While it is pretty impractical to focus mostly on a continent, with the littlest amount of creativity, you can make it work. Come up with something about horses not being native to the continent, making shipping along the coasts the main method of transporting goods and travel. From here, you can fork off cities, towns, and settlements all originating from the ports, the main hotspots of civilization. Smaller and smaller settlements as you go further from the ports, due to the difficulty of land transportation. You can even make countless landlocked countries which are entirely disconnected from the port-centered lifestyle. People fleeing from these countries and becoming pirates would make vastly more interesting characters than lesbians who cocktease stupid boys.
