how long have you been on testosterone for?
100mg of testosterone a week might put you right back to your natural levels or maybe even lower. from personal experience endocrinologist/urologist will not prescribed testosterone with those numbers.
save your time.
im not medical expert but i can bet that the lack of motivation, tiredness fatigue, etc is no due to testosterone.
did you get other blood work done? you need to do all basic bloodwork
cmp, cbc, a1c, hdl , tyroid levels(tsh), vitamin d
vitamin d can mimic low testosterone levels
cant stress that enough
have you had a sleep study done for sleep apnea? are you overweight?