Not obvious where.
Changed first post and in first image?
prolactin is not a factor
AST/ALT good, no obvious issues with liver
Total cholesterol 135 is a big problem for hormones. Cascade of steroid hormones starts with cholesterol. Cholesterol <160 is associated with increased all cause mortality. We see this often enough here with younger males. Reasons unknown. Diet changes may help, but most cholesterol is made in the liver and diet is not the main contributor. Some have taken Rx cholesterol.
Testosterone is low and HTC, RBC, total proteins and E2 are typical for this. FT in in line with what we expect with low T.
But SHBG is at an unexplained high level relative to TT, FT and E2.
Calcium is oddly high normal.
TSH=1.91 is not near 1.0 and T2 is below midrange.
Higher T3 uptake values can indicate that T3 is lower.
We really needed fT3 and fT4 AND rT3.
IGF-1 is a but low for your age group. Might be influenced by low T and thyroid issues.
BUN is high. With higher SHBG pointing to the liver, and BUN possibly also, warrants some further consideration of liver function. Low cholesterol is another liver connection. Doctors are looking for diseases and will probably not be concerned with any of this and most will thing that low cholesterol is a great thing.
Again, iodine is a major concern and added iodine must be accompanied by selenium.
You have secondary hypogonadism and cause may be Finasteride/Dutasteride.
You can try a HPTA Restart - see links. If that fails, go to TRT.
BUN can be elevated by taking a lot of things like naproxen.
While low T is clearly from low LH/FSH, I suspect that low cholesterol has created lower DHEA and pregnenolone. Progesterone and cortisol can then also be low. Low DHEA can limit DHEA-->testosterone. You can try DHEA 25mg. But you should complete my list of labs to get these things sorted out.
Your intense training, overcoming the above problems with adrenalin is really inviting adrenal fatigue. Your adrenals may collapse. rT3 lab is needed to see whats going on. Behavior modification is needed. While you do need more iodine, I strongly suspect that this will not be everything that is needed.
So that is a lot of stuff to deal with. You can't do this on your own and need a good medical partner.
Overcoming the suspected rT3 issue may require dosing with T3, suppressing TSH, lowering T4 which then lowers T4-->rT3.