Could My Fatigue Be Due To Lower Than Normal Free Testosterone Level Despite Weekly Injections, Given My High Activity Level And Long Work Hours?

My total testerone it 500 while the free is 100 is this why I am so tired and worn out I take a weekly injection 10MG.. I am 65 work 7 days a week and work about 12 to 14 hours a day...physical average steps is 20,000 to 22,000 steps a day at least 3 days a week I am over 28,000 steps ?