so what harm could i possibly do.
I have profound sympathy for anyone who wants to self-treat when they are genuinely low T and can't get help from their doctors.
That said, you can hurt yourself self-treating. Here are just a few examples:
a) Driving your hematocrit too high (increased risk of stroke, heart attack)
b) Driving your estradiol too high (imo increased risk of prostate cancer and BPH) or too low if you self-treat with an AI (osteoporosis, increased heart attack risk)
c) Driving your blood pressure too high (increased risk of stroke and atherosclerosis)
It is possible for a well-educated man to do reasonably well at a TRT program and, to be frank, most doctors around the globe would probably do much worse as far as protocols. However, one thing that almost all doctors will do is monitor hematocrit which could save your life.
One other thing: are you concerned about fertility?