Unless I don't sleep well and wake up in the night and don't manage to go back to sleep, I get around nine per night (I get up at 8:00 as I WFH). For years I got six and I was always tired. If I get less than eight I'm positively grumpy. It's a shame because I could get so much more done if I didn't need so much sleep.
How many hours' sleep do you get and is it enough for you?