That chart lacks important information like the standard deviation, here's the complete chart:
So, considering the standard deviation for you age above 447 ng/dl is considered normal. Then you have to consider environmental factors and even lab deviations.
Not trying to talk you out of TRT, I'm the last person who should be allowed to do so (lol), but just do it for the correct reasons and be aware of the problems and complications that will for sure arise from it. When you plot the data a sample population will be like this:
AS you can see there is a lot of variation, what is low and what is normal is very difficult to distinguish. At the end of the day symptoms should be what physicians evaluate and treat.
Sorry for the small rant, but im kinda tired of those kind of charts, which are posted all over the internet by so called health clinics, which are nothing else than marketing!
If you want to improve your test level make sure you draw blood for the test first thing in the morning, and supplement minimum 5000ui of vit D3 daily.
If you want to go TRT do it properly with a doctor guidance.
And yes, you should be able to get TRT just because you want it, women do it since the 60's...