Fatigue or Tiredness all feel at times. Fatigue may be due lack of sound sleep few weeks to months, busy work neglecting breakfast or any meal, not eating healthy, Repeated attacks of infections. Or some times due
thyroid anemia, anxiety.
Here are some advices
Eating nuts, fruits vegetables
Doing regular exercise Yoga meditations.
You can use some ayurveda herbs helps in fatigue like ashw a Gandhi, brahmi, Aruna, amla.
If not helping consult ayurveda doctor
Hope u feel better soon.