What Type Of Zinc Advisable For A Person With Skinny Body?

Name (Aaron Adam) Age 24 Gender (M ) Current prescription(s) you are taking. none Current condition(s) you are being treated for. none I need professional advice on this Im having problem with secondary sexual characteristics maturation. first, im 24yo male but i look like 14yo boy. im too skinny. i guess zinc would help me. but which zinc should i get?? Zinc, Zinc Picolinate, Zinc Glycinate, Ultimate Zinc-C or Opti-L-Zinc? Why am i so miserable..i searched many sites and found out that zinc picolinate and glycinate are best as they can absorbed in bloodstream/body quicker.. is it true?? Which one should i choose? zinc picolinate or glycinate?? I want it mainly for sexual maturation. i dun have mustache,beard,thick hair,deep voice,muscular body etc.. see,those are secondary male sexual characteristics that should occur during puberty. It has been more than 10 years since i hit my puberty..My friends are teasing me. I eat a lot,tried weight gain,protein shakes n gym for a month but no change..its spoiling my confidence., Whats wrong? So its zinc the answer?if yes which form