The dorsal hump is composed of bone bone and cartilage and has to be surgically shaved down in order to remove it. Osteotomies of the nasal bones are then required narrow them. The tip of the nose may need some minor adjustments to balance with the new bridge line. We do not recommend temporary fillers placed in the nose. For many examples, please see link below.
Your only option is surgery. Surgery can safely and effectively remove the hump, granted you choose a skilled surgeon. However you will have to overcome your insecurity on your own.Good luck