Insight Timer App offers thousands of guided meditations, relaxation music and courses to help improve our mod and decrease anxiety. Use the search bar within the app to find ones that work best for you. They do have a pro version that does cost but most of the tools are available for free. It is an app loved and used by most therapists!
https://medicine.umich.edu/sites/default/files/content/downloads/Relaxation-Skills-for-Anxiety.pdf