Hello,
I understand your condition.
For feeling low energetic all throughout the day, there could be various reasons. First being your lifestyle which includes your sleep cycle, if you have a sedentary life, dehydration or poor nutrition. Next being your mental health where if you are stressed and anxious , depressed or overstimulated with screen time etc. Next being medical reasons like hypothyroidism, anemia,
vitamin d deficiency, hormonal changes, chronic infections,
sugar.
As there are variety of conditions to be ruled out proper consultation is required.