Why do i perceive and see the world as completely lifeless and dead. is it because of my depression or adhd or low dopamine levels. ?

There are many: pieces to the health and mental health puzzles of life. I see that you are working with some by looking at your history. Consider speaking w/a friend, relative, or prudent spiritual leader about your view of life. If a mental health professional who does psychotherapy is available, please see him or her also. Life can be unjust but if we work toward making it better it can hold much meaning.

Therapy?: Have you yet tried any form of psychotherapy? Typically, the optimal combination of things to treat emotional issues such as depression is medication (which, on your best day, is supposed to take the edge off symptoms) but the real gruntwork takes place in psychotherapist's consulting room.

Professional help: is what you need, you have complex condition and on several medications, a specialist psychiatrist or even a subspecialist who can diagnose and treat adhd and depression, not easy, please ask your doctor for referral or seek referral yourself, stick with the doctor you identify well with and don't miss follow up appointments or medicines, your condition is well treatable, you deserve better