First, it appears you are taking pics in the gym. Any kind of pump will improve your vascularity-look temporarily. Second, you may be in fact above 15% but I would say that’s prob about right. Somewhere in the mid teens. You can take a caliper reading and a bioimpedance and then average them for a good baseline. Not extremely accurate but again, good enough.
You really should stop giving pharma advice. You clearly have stated several factually incorrect things as well as opinions that are not held by most knowledgeable people. You also don’t have the physique or experience to by giving guidelines.
Sure, there is plenty drugs (medications) that can be used recreationally.
This reminds my of what a doctor who prescribed AAS in the 1970’s. A recreational drug user who I knew that lifted weights asked Dr Yip for Dianabol, Black Beauties, and Quaaludes. Dr Yip replied, “Ah so, you want to get strong and lose weight while you sleep?”
Im going to take a different approach off the bat id say wait till your 25 maybe take some RETA for weight loss to get BF% down relatively safe with next to no sides. Since you seem interested and probably will end up running a cycle anyways get your baseline test levels checked and cbc health markers. Drop this 500mg crap and bump it down to 150mg-200mg(MAX) every week TEST only splitting your dosages in evening pinning every other day. Let your body saturate with it for two months and then retest your levels to see how far the needle has moved. Keep an eye on estradiol symptoms itchy nips, bloat, mood swings and acne if you experience this something like anastrozole will help .25mg twice a week will bring your levels back to stable without crashing your E2. Keep fats under 70g a day, drink 2L+ of water, take fish oil, moniter hgb for blood thickening I typically donate every two months to lower it but now moved it to every 3 months. Atleast with this you will stay relatively safe with minimal sides than running 500mg and not knowing what to do. I cruise on 200mg as im on long term trt. Tbh I dont really think its a good idea to be cycling on and off unless you know what your doing but below 200mg is maintainable with benefits year round as long as you manage sides(which should be minimal. Again blood work is important to monitor all this along with a good diet you should see some good returns on gains and done safely.