Health app not recording sleep data, like it used to before.

I had set up my sleep schedule, and it used to make a graph thingy, and show me my sleep pattern and tell

me how much I’ve slept at night, without needing an Apple Watch or anything, now since September, it’s not showing that up, or even tracking it. I need to put the data manually, which is very inconvenient, obviously. I’ve tried deleting the sleep schedules and then making them again. I’ve tried going into the data sources for the health app sleep tracking and tried making the iPhone thing the primary one, doesn’t work.