I have low testosterone but have tried several treatments and nothings has helped with the low fatigue. Any help?

Check other things. Persistent fatigue with testosterone replacement could suggest that there maybe other issues such as vitamin issues, adrenal fatigue, thyroid issues, anemia, or perhaps inadequate testosterone replacement. Speak with your doctor or one who specializes in hormone replacment to help improve your fatigue.
Testosterone. May be the best treatment will be testosterone supplementation, please consult your endocrinologist.