Simple:
* The small town was underrated; it had charming shops and friendly locals.
* The movie was underrated and deserved more attention.
* He's an underrated artist who deserves more recognition.
More complex:
* Despite its underrated status, the book is a powerful commentary on social inequality.
* The underrated benefits of exercise include improved mood and sleep quality.
* The restaurant's underrated menu offers unique and delicious dishes at affordable prices.
With emphasis:
* Underrated is an understatement! This album is truly amazing.
* That movie is so underrated; it's one of my favorites.
* I can't believe how underrated this singer is! Their voice is incredible.
As a noun:
* The restaurant was a hidden gem, a true underrated in the city.
* The book is an underrated classic that deserves to be read by everyone.
Remember to choose the sentence structure and tone that best suits your context.