"I had full labs done prior to starting TRT"
Is not a very clear answer, you had pre TRT labs done and I assume those are the 758 testosterone level labs, but it's still rather ambiguous. I like to have clear answers before saying anything.
Did you have LH and FSH tested?
I honestly don't think your problems are low testosterone, A. because you weren't low and B. your libido was fine, and you only complained of vague symptoms like energy and stamina
