No sex drive, low energy and focus. Erectile Disfunction. Could T level be too low?

Patient: I am 38yo. I have low energy, low focus, no sex drive and cannot get an erection even if I want to. I have high cholesterol but exercise regularly and take statins for my cholesterol. I am dependent upon stimulants to get me through the day at work. My free T level is 413. Is it feasible that my free testosterone is the source of my symptoms?