I have a very unstable sleep schedule, although I sleep a lot could this be why I have low energy?

i have a problem sleeping i mean i stay up late and i know im getting tire but i still fight the sleep.When i do go to bed i still cant fall asleep until its like 4am soo i force myself. Then i sleep for like 11 hours and i still feel a bit sleepy, soo your not the only one is what im saying