> Getting really tired of these posts telling me how to sleep.
Haha -- if you meant it as a joke! And if you didn't... nobody is telling you how to sleep. It's just someone with an opinion.
> Turns out if I go to bed later and sleep 6-7 hours, I feel much better, even if my "sleep scores" are much worse.
Sleep cycles are generally between three-and-a-half and four-and-a-half hours long, I think, but maybe yours are slightly on the shorter side.
Either way, if you're getting two cycles in and you wake up cleanly after the second one, that is a great place to be. If you're sleeping such that you're being woken by your alarm in the middle of a sleep cycle, that is hell after a while.
Before the industrial revolution really settled in, before the electric light, many people used to routinely have "first sleep" and "second sleep", splitting up two cycles, and they would have meaningful time to do stuff in between. There are references to it in stories and it's seemingly where the whole "midnight adventure" trope in children's stories comes from.
Sometimes I am like this, depending on my stress levels. That time in between sleeps can be lovely if you know you have time for it.