Hello there it is common psychology of humans That they get attracted to harmful things badly. They are good in some conditions but not a young chap like you. They are steroid tablets for muscle strengthening and stamina as you said but then you will feel energetic now but after 5 yeas of age you would end up with many complications of kidneys,
liver, brain, obesity and the dosage you're supposed to take now will not be enough after a month you would crave for it. So better avoid them. And motive they won't be available that easily it needs prescription to get them.
Thank you