As part of Android 11, Google introduced "Bedtime mode" which can be scheduled or have it turn on while charging the phone. Grayscale changes the screen to black and white, and Do Not Disturb silences notifications to help the user get a good night's sleep.
Unfortunately couldn't find it after updating my device "Galaxy Z Fold2 5G".
So, when will it will be released or where can I find it if it's there in One UI 3.0?
You can use Bixby routines to configure bedtime or you can use digital wellbeing to configure bed time mode at a scheduled time.