You are still relatively young at 26. I personally wouldn’t go on TRT at your age. You probably still want to have kids so its not a good idea. At least when you are off cycle you will be able increase your own natural test/sperm production with clomid, so you have a much stronger position to stay fertile.
Does steroid use permanently suppress your bodies ability create decent levels of natural testosterone? Maybe, I don’t know, people are different and react differently. Most users will keep using for a long time, even when cycling that in practice it appears that many people don’t recover, to pre usage levels. They hop back on before the body really has a chance to fully recover. Not many people that have been using want to go off steroids for a year or 18months, to see if they do recover to high levels, so they continue cycling or go on trt.
Many guys use HCG in small amounts on cycle to keep testicular function going instead of shutting down fully. This seems to keep a guy’s fertility, plenty of Pro’s seem to have children whilst still competing.
One of the respected Anabolic Doc’s says the problem is religiously taking the HCG, most guys get lazy and stop using it. He thinks when you have been shut down for many years, even taking a large amount of HCG to kickstart your balls back into activity has little chance of success.