Your morning cortisol is low. The noon sample looks borderline low too.
You report muscle twitches. If you have adrenal fatigue, you will be losing electrolytes like crazy, which will cause the muscle twitches. Replacing electrolytes can help you feel a lot better in general and sleep better too. That should help at least some with fatigue.
Electrolytes are magnesium, potassium and sodium. I do a custom electrolyte drink with powdered magnesium glycinate and potassium gluconate mixed in water and drunk, four times a day. I also add sodium (salt) if my adrenals are particularly bad. You will know this if you are craving salt or salty foods. My biggie is potato chips.
The standard treatment for adrenal fatigue is adrenal cortex extract. I found this and all the standard treatments (DHEA, pregnenolone, etc.) overstimulating.
I've done well with Dr. Wilson's Adrenal Rebuilder, which is the glands without the hormones.
Ben Lynch (Seeking Health) has a supplement called Optimal Adrenal which also doesn't have hormones. It has various nutrients and some adaptogens. I haven't tried this.
If you drink coffee or do anything with caffeine - tea, chocolate, etc. - stop, as that will only make your adrenals worse. If you have any stress in your life, get rid of it, either by lessening responsibilities and/or doing calming activities such as meditation, EFT, etc.
If you feel the need to sleep or take a nap, listen to your body and do it.