Regarding skin tone. Skin look normal!

My face skin looks dark,dull , damaged and dead. Am only 25, i feel this could be because of lot reasons which i listed below. 1. I exposed to sun a lot during childhood 2. I had some white patches in the face when was in school. You can still see it on right side of my chin 3. I used melacare few years before but it just made it worst and darkened few parts of face this making it look uneven skin tone. 4. I used to use computer a lot for the last 5 years due to work. I tried local clinics throughout my life and none was produced good result so i gave up and not take any effort last 2 years anyway i am just posting this to see if there are reliable solutions available now. I just wanted to make the skin look normal Thanks.