That's a very low reading, man. The baseline for my 65-year-old father on TRT was not that low. Diet, OTC remedies, and lifestyle changes are not going to make a dent in your levels unless you're just currently fucking everything up (alcoholism, overtraining, insomnia, all at the same time.)
One thing I do know is, in TRT you will need to advocate for yourself. Most MDs, including endocrinologist/urologists, know fuck all about this treatment, nor are they interested in learning. The guy my dad was initially set up with was trying to give him 200mg test injections every two weeks. I can't imagine what a clusterfuck of a hormonal rollercoaster that would have been...
The two routes available for you are going to be finding a guy who specialized in TRT, like an antiaging clinic, or to get a good GP that lets you basically run your own program and puts the orders in for you. The latter will be a hell of a lot less expensive, but you will need to do your diligence. Like Metro and Why have mentioned, there is a lot more to the story than test.
I sympathize with you on the fertility thing. It's my #1 reason for not going on the juice yet.