Here's why:
* First-person narrators tell the story from their own perspective, using "I" and "me." They are directly involved in the events of the story and share their own thoughts and feelings.
* Third-person narrators tell the story from an outsider's perspective, using "he," "she," "it," or "they." They can be limited (only knowing the thoughts and feelings of one character) or omniscient (knowing the thoughts and feelings of all characters).
While a third-person narrator might occasionally use "I" or "me" to quote a character, they will primarily use pronouns that refer to others.
Examples:
* First-person: "I walked down the street, feeling the warm sun on my face."
* Third-person limited: "She walked down the street, feeling the warm sun on her face."
* Third-person omniscient: "He walked down the street, oblivious to the warmth of the sun."
Let me know if you have any other questions about narrators!