53Chevy, your journey has been a very difficult one. I would recommend that you consider a few things:
First, sex hormones do not necessarily drive all aspect of the human experience. While DHEA and TRT can provide a positive lift in mood, energy, libido, etc. a number of other things can impact these things as well. Therefore, adding or subtracting one sex hormone or another may or may not be beneficial. Depression alone, with no sex hormone deficiency, can cause a lot of the horrible things you have experienced (low motivation, libido, weight gain, etc.).
Second, exogenous hormone replacement causes a number of downstream events that can impact how you feel. For example, with Testosterone Enanthate, trough levels gradually increase over time. By the time you reach a steady state your peak, trough and avg levels are different from where you started. Maybe you felt good in the beginning, but your physiology may not appreciate the higher levels a few months into treatment. Also, the longer high levels of testosterone linger, the more opportunity there is to convert it to estrogen and DHT. High or low levels of these can make you feel good or bad, too. So, now you are chasing multiple hormones.
My personal feeling is that less is more. I think it's common to feel that if substance X is good for you, then more of substance X is better. With TRT, I think the opposite can often be true. I am not the first to suggest that TRT is not the answer to all things related to mood, energy, libido, etc.
Lastly, you seem to have a (possibly justified) skeptical perception of doctors in general. I think you need a good primary care physician whom you trust that can address your electrolytes, apnea, palpitations, thyroid issues and mood. Human physiology is very complex and a good, competent physician who can quarterback your health and possibly consult with specialists where needed may do you a lot of good.