If you are starting to dance at 16, you will have a lot of catching up to do. You will need to train very hard and be very dedicated to your dancing. You will also need to be able to handle the pressure of competing in dance competitions. If you are able to do all of these things, then you may be able to become a professional dancer.
However, it is important to be realistic about your chances. The competition in the dance world is very fierce, and it is very difficult to become a professional dancer. If you are not willing to put in the hard work and dedication, then you may be better off pursuing another career.