As you are circumcises, you clitoris is already disturbed or even removed. If this is so, you have to depend on vaginal muscles. Doing kegel exercise may help you to strengthen your pelvic floor, perineum and PC muscles. You can contract your vaginal muscles during intercourse more efficiently. This may create a pleasure in intercourse. You may try female deer exercise. Google both exercises.
To help dryness, use a proper lubricant. Otherwise, when having intercourse, do you have any pleasurable feelings in the vaginal area? Is your clitoris intact?