The point I think trying to be made is you are pretty young with what should be healthy hormone levels. Don't mess with AAS / PH / SARM etc until you have exhausted growth utilizing diet, training and natural assistance (i.e. creatine, hmb, etc) When you are absolutely certain you have plateaued begin a well researched cycle. If you go dark side my personal opinion is that the best first cycle is always long esther test with a 4 week dbol kicker.
Between then and now you have a lot of research to do. Learn what your diet should be while on, what ancillaries you should have on hand BEFORE you start etc. Good luck to you.