Hello Friend, Good that you are seeking a help here. Sleep is essential for both physical and mental health. Depression is one of a key reason for sleeplessness. Similar anxiety can disturb with with sound related issues.
So it's better to understand the reason or root cause for depression and take appropriate treatment.
Don't worry. Depression is just like any other physical illness and can be treated through counseling session, self therapy, few lifestyle changes, dietary or exercise.
Talk to a psychologists in detail about your problem and I am sure you can overcome this problem soon.
Next Steps
Feel free to reach out to me online through Practo for further detailed evaluation and suitable solutions that you can follow practically. Be positive. You will be alright soon.