Homebody

Homebody
refers to a person who prefers staying at home rather than going out or engaging in social activities outside.
Examples:
1- Whenever there’s a big party, Mark, being a homebody, usually finds an excuse to stay home and read a book.
2- J.K. Rowling, the author of the Harry Potter series, has mentioned that she’s a homebody at heart, enjoying quiet time at home with her family.