How can implementing micro-interactions enhance user engagement on mobile applications?

In the realm of mobile app development, micro-interactions are often the subtle animations or responsive actions that occur as users interact with the app interface, such as a button press, a notification pop-up, or a visual response during a loading process. These small design elements might seem insignificant at first glance, but they can play a crucial role in enhancing the overall user experience by providing feedback, engaging users on an emotional level, and improving usability. How do these micro-interactions contribute to enticing users and keeping them engaged, and what are some best practices for effectively integrating them into an app's UI/UX design? Exploring this question could shed light on the balance of aesthetic, functionality, and user satisfaction in mobile app design.