For many students listening is the hardest of the four skills to master. Unlike reading, listening happens in real time and it can be hard to control the speed of the information coming at them. There are now a great many websites and apps that students can use to develop their listening skills independently and which teachers can use to create interesting learning and support materials for their students.
https://www.oxfordtefl.com/blog/10-tools-for-developing-students-listening-skills