Reborn as Raditz, he found himself with a hole in his chest, a critical situation yes, but not one without solution.
With a strong willpower and sharp mind, Raditz would rise to become the strongest being alive.
One common theme is redemption. Since Raditz is initially a villain in the Dragon Ball series, many fanfictions focus on how a female character can bring about his redemption. For example, through her kindness and understanding.
If Raditz survived in fanfiction, he would likely have a complex relationship with Goku. He might start to see the value in Goku's way of life. Goku could try to reform him, and Raditz could slowly become a more positive force in the Dragon Ball Z universe.
One popular female Raditz fanfiction is 'The Redemption of Raditz'. It focuses on a female character who befriends Raditz and tries to change his ways. Another one is 'Raditz's New Path' which explores Raditz's journey with the help of a female protagonist.
Raditz could be redeemed by sacrificing himself for the greater good. For example, if there was a powerful enemy threatening the Earth and he steps in to take a fatal blow meant for someone else, like Gohan or Goku.
I love raditz as a character in fanfiction and in stories like these,it is interesting how raditz became stronger than goku,so please keep it up I love this story please.