Kinda sad

I'm getting kinda nervous about my age and the time i have left to build a career as a musician. I've seen that most singers started their career at such a young age and i wanna do that too, but i'm already 16 years old, this year i turn 17. I want to stop growing, i want more time to build my career. The worst part is that i've wanted this since i was a kid, but i never did something to achieve it, now that i'm running out of time i start to get desperate to start asap. Now I have a job and it's getting harder to progress, i don't have enough time to do things bc i'm at work almost all day. Days fly by, in no time i'll be 17 years old and i just don't want that 😞. People nowadays keep achieving a lot of things being super young, people keep getting famous and successful and i'm just here doing nothing, i feel so useless. I hate myself for not doing something to start my career when i was on time. I even want to be a youtuber, or EVEN tiktoker, but i just keep making excuses everyday and end up with nothing, i want to do something to end with this feeling, but everytime i try, i keep telling myself that i'm not good enough, that people will make fun of me, that no one will be interested in my content, so i don't post videos or things that i make. A local band is looking for a vocalist, i want that vocalist to be ME, but i have to send a video singing (obviously) and i started to doubt if i'm actually good at singing 👎. I'll try to send the video today and I'll post the progress (if there's any xd). I want to be a singer SO BAD, please god, give me a chance, please...