Agree. I'm in bed between 9-10 every night (later than that is an exception), and read a book on my phone as part of my sleep ritual. My phones DnD comes on at 9 so I do not get any alerts while reading. From when I get in bed to read, to when I fall asleep might be 15 minutes depending on how much exercise I did that day.

I set an alarm for 6am, but even without one I'm up between 6-7.

Personally, I think the key for people who have a hard time sleeping is consistency. If someone is trying to go to sleep at 10pm Sunday through Thursday, but then staying up until 2-3am Friday and Saturday it's no wonder they can't get on a schedule.