Get it through your head that despite a wildly profitable industry marketing "low T" to men, this isn't a "supplement" like you'd buy from GNC. This is exogenous replacement of something your body makes, that levels naturally varying significantly through the day, and that you have levels in the normal range. When you give your body testosterone, it stops making its own testosterone, which has its own health effects. You also don't get to just quit taking it when you feel better and return to your baseline right away. You can look forward to either a lifetime of supplementation, or about six months of feeling like absolute crap.
When you have multiple physicians in this thread cautioning you, maybe that should give you pause instead of throwing a tantrum.
You are correct, and as usual in the men who have decided that testosterone will cure what ails them, the reaction to suggesting that (entirely reasonable) possibility is one of aggressive and angry denial. The reality is that the picture is rarely clear, and inadequate/disrupted sleep can cause a host of secondary symptoms (appetite, mood, libido, fatigue, concentration, etc.) which can often mimic depression-type symptoms. I wouldn't be inclined to diagnose OP with any sort of clinical depression given what he has otherwise reported, but at 29 years old and with a normal-range testosterone neither would I be willing to prescribe him exogenous testosterone supplementation. As I said above, if circadian disruption has been identified as a contributing factor, then fixing that is the first objective. Dosing yourself with a hormone to mitigate the effects of a bad work schedule is just nuts.