In a fanfic of Bardock arriving on Namek, he could land in the middle of a conflict between different Namekian tribes. Bardock, with his warrior skills, might get involved and try to bring peace. He may also find that the energy on Namek is different from what he's used to and has to adapt quickly. His arrival could also set off a chain of events that changes the future of both the Saiyans and the Namekians.
One idea could be that Bardock, after somehow escaping the destruction of Planet Vegeta, lands on Namek. He then meets a young Namekian who is curious about his Saiyan powers. Bardock could start training this Namekian, passing on some of his combat skills.
One popular Goku reader Namek fanfic could be 'Goku's Adventure on Namek'. It might involve Goku exploring the unique landscapes of Namek, interacting with its native species, and facing new challenges. Another could be 'Reader and Goku on Namek', which perhaps focuses on a self - inserted reader character joining Goku in his Namek - related quests, like searching for the Dragon Balls.
Well, it could be about Bardock arriving on Namek before the Saiyans' destruction. Maybe he teams up with the Namekians against some common enemy. He could use his Saiyan strength and battle instincts to help protect the Namekian villages.
Frieza might initially be shocked. He's used to being a feared and powerful being, and the idea of having a family is very foreign to him. So he could be in denial at first.
For Yamcha, you can focus on his growth from being a bit of a comical character to a more serious and respected fighter in the context of his relationship with Frieza. Maybe he learns from Frieza's cold and calculating nature how to better strategize in battles. For Frieza, his development could be about him learning to care for someone other than himself. He could start to see Yamcha as an equal, which is a huge shift from his usual superiority complex.
In the fanfic, Bardock might find a connection between the Saiyan and Namekian races that was previously unknown. There could be an ancient prophecy on Namek that mentions the Saiyans, and Bardock's arrival could be seen as the start of the fulfillment of that prophecy. This could lead to a whole new set of adventures and alliances for him.
You can try websites like FanFiction.net or Archive of Our Own (AO3). They have a vast collection of fanfics, and you can search specifically for Goku reader Namek fanfics using their search functions. Just type in relevant keywords like 'Goku', 'reader', and 'Namek' and you should be able to find some interesting ones.
In the fanfic, Bardock arriving on Namek could lead to a change in the power dynamics. He could train with the Namekians and learn their unique techniques. This new knowledge combined with his Saiyan strength would make him an even more formidable opponent. And perhaps, his presence could inspire the Namekians to be more proactive in defending themselves against external threats.
If Bardock arrives on Namek in the fanfic, it could also change the fate of the Dragon Balls. Instead of being just a tool for Frieza or the Z - fighters to use, Bardock could have a different vision for them. He might see them as a way to not only save Namek but also to restore the Saiyan race. This would open up a whole new set of plotlines and possibilities, as his motives would be different from the other characters who have interacted with the Dragon Balls in the original story.