With practice, dedication, the right mindset, and talent, one can become a beautiful singer. Even while the amount of talent you were born with is out of your control, you DO have control over how you use the talent that you DO have.
A great singing voice can be developed with practice and training. Is it unexpected to you that you have the ability to sing beautifully? Instead of relying solely on innate talent, the bulk of beautiful art is actually created via discipline. You actually need a knowledgeable teacher to understand how to balance your voice. Training your voice on your own is difficult, if not impossible, especially in the beginning. Thus, you want to hunt for a reputable coach.