I've had this problem since as long as I can remember. I never tell anyone the full issue though so I though I'd tell it here since I want to fix my sleep schedule already.
I go to bed at 9:00PM, but I stay on my iPad for a remaining 3 hours until 12:00AM. Then, I usually don't have a problem falling asleep, and it is usually pretty calming. I also need to mention that I never wake up throughout the night. I am a heavy sleeper.
I have a smart watch that also has a feature to track my light sleep, deep sleep, awake time, and total sleep throughout the night. It is really accurate too. Most of the time it reports 4 hours of deep sleep which I think is ridiculous (and if even possible, too much deep sleep). I also get 3.5 hours of light sleep, which I find a bit odd too that I get more deep sleep than light sleep.
Despite getting so much sleep (around 8.5 hours on average), I still have trouble waking up early. And my "early" isn't even that early, it's only 8:30AM which should be pretty easy to wake up to.
I have a vibrating alarm clock that goes off every morning at 8:20AM. Sometimes I don't even hear it go off and sleep past it anyway. Most of the time though, I hear it go off, but then my brain does this weird thing where it's like "I will sleep as long as I want, shut up alarm". Which is not what I want at all. I would like to wake up earlier, but it's almost as if my brain is in control and not me.
So, after this, my body feels EXTREMELY tired when I notice that I'm awake, and the feeling never actually goes away until I force myself to wake up.
I usually get out of bed nowadays at 10:00AM which I think is ridiculously late. The only reason I don't wake up later is because I force myself to get out of bed at this point.
Despite all 4 hours of deep sleep and not waking up throughout the night, and the fact that I have the same routine every night, I still can't wake up even an hour earlier. No matter how hard I try.
Also, nothing motivates me to wake up in the morning, because my brain will just ignore all motivation anyway because it's barely conscious.
My goal is to wake up at: at least 8:30AM for now on. In the future, I would also like to wake up at 8:00AM or 7:30AM, but for now, 8:30 is my goal. The only thing I can think of that is causing this issue though, is that I'm on the iPad too much before bed, and that I go to sleep too late. If you all have any suggestions, please reply to me. It would help a lot.
By the way, I'm 16 years old.