Most of them are horrible and the most "qualified" are typically the worst. You can read the stickies suggested and may end up knowing more than the three combined.
Unless old[er] and age related low-T can be assumed, you need to test LH/FSH before any TRT is started to know/diagnose if the problem is in your testes or from low pituitary output. And if younger, is testicular cancer involved [not rare] or a pituitary adinoma [not rare]. Many docs have none of this on their radar. An age management doc will try to optimize all aspects of your hormonal heath if he/she is good.
Note that many/most guys who come here have some thyroid function problems, see last paragraph in this post.
We really need to know more about you to help as some things are very age specific.
It seems to be rare that one can have a good outcome being passive about your hormone healthcare. So finding a doc is only part of what you need to do.
There is a sticky for finding a TRT doc too.
Please read the stickies found here: https://forums.t-nation.com/t/about-the-t-replacement-category/38/2?u=ksman
- advice for new guys - need more info about you
- things that damage your hormones
- protocol for injections
- finding a TRT doc
Evaluate your overall thyroid function by checking oral body temperatures as per the thyroid basics sticky. Thyroid hormone fT3 is what gets the job done and it regulates mitochondrial activity, the source of ATP which is the universal currency of cellular energy. This is part of the body's temperature control loop. This can get messed up if you are iodine deficient. In many countries, you need to be using iodized salt. Other countries add iodine to dairy or bread.