Well... it does seem that you have something highly unusual, possibly BDD, since your level of dissatisfaction with your looks is... well... intense.

So OK, let us try being more or less objective, and, let us try to get into a problem-solving mode.

What do you dislike about your skin? hair? smile? I am listing those because they can be changed. Acne can be treated, hair can be made into a different cut/do, and dental work can improve the smile.

What seems to be the most worrisome thing is that you hate your voice. This is not even BDD - this is something else. The voice is one of the most enduring and robust characteristics of a human; it does not change as nearly as much as looks do with age. What exactly do you dislike about your voice - that it is not musical? Or, you just dislike the sound of your spoken speech in general?

Hating one's voice signals such a tremendously deep internal conflict that you must be in therapy and the therapist should know that you hate your voice.