Being asked “can you sing?” is probably pretty scary for most people, especially for beginner singers. But just as learning how to play any instrument, you also have to do the same for singing. If you’ve convinced yourself that you can’t sing, it’s just because you haven’t had the chance to properly train it as your idol has. And the best thing is that you can start practicing right away with the help of so many vocal teachers online.
If you’re not convinced, here’s a video explaining it in scientific terms.