You're awfully dismissive of folks trying to help steer you in what may be a better choice for you. You state that diet and exercise aren't a problem, then counter with you don't really know what your calories/macros are; just whatever your mom makes. That's not being on top of diet!
You then state that you somehow know you don't have adrenal/testicular/pituitary problems - all with..? A blood test? Wishful thinking?
You're 18, this means that you've got PLENTY of time to figure things out. Heck, if you want to go by your blood test results, what time was the draw done? What were your LH/FSH/vitamin D/prolactin levels?
Wouldn't you want to actually FIX the problem, instead of just TREATING it? As someone that spent ten years with low T, it was a godsend - but I'm not going to lie to you - if I could have just fixed the problem, I DEFINITELY would have.
Don't just think about today, you need to think about tomorrow too. Before you know it, you'll find that you will regret making poor decisions, and this could be one of them if you don't spend a little time not only truly educating yourself, but seeing if there is a way to not only verify IF there is a problem, but also IF TRT is the
best option for you.
My .02c