Why do I sleep for 12+ hours?

Pretty much what the title says. And it’s not just when I sleep late 😭 Like I can be sleeping before 22:30 (10:30 PM), but the next day I’d be waking up at 11:00 AM. And alarms don’t even work for me. I can’t hear them, so they just ring and cool down. Even multiple alarms don’t work. Neither does the sunlight from the glass windows. I am not even taking any meds that could be causing this. 😭😭😭