What if your favorite TV show never ended? It would be a great treat, but sadly that can’t happen. Since shows can’t last forever, producers came up with the next best thing, spin-offs. That’s when a character from the main series has some popularity, and then he or she gets their own show. Whether or not that new adventure is fruitful or not entirely depends on the ratings that come after.
https://www.trend-chaser.com/entertainment/best-spin-off-series/