Answer: There are a few potential reasons why Books I-IV of the Odyssey, also known as the "Telemachy," focus on the story of Telemachus rather than Odysseus himself.
One possibility is that the "Telemachy" serves as a way to introduce the main characters and setting of the Odyssey. By beginning the story with Telemachus, the reader is able to learn about his background and the challenges he faces, as well as the broader context of the story, such as the political situation in Ithaca and the impact of the Trojan War. This helps to set the stage for the rest of the Odyssey, in which Odysseus takes center stage.
Another reason the Odyssey may begin with the "Telemachy" is to build suspense and create a sense of mystery. By focusing on Telemachus and his search for his father, the reader is left wondering about the fate of Odysseus and what has happened to him. This serves to engage the reader's interest and keep them engaged in the story.
Overall, it is likely that the "Telemachy" serves as an introduction to the Odyssey and helps to establish the characters, setting, and context of the story, as well as building suspense and creating a sense of mystery.