My Redmi 9 is my intro to Android, so I'm still trying to figure out a lot of stuff, in particular, battery use at idle.
I know this is a loaded topic, dependent on apps in use, which radios are active, signal strength, number of notifications received etc etc, but I'm just trying to establish a baseline. When comparing battery use at idle, I'm talking about battery consumption when you're sleeping or otherwise not using your phone for several hours.
I've seen a lot of commentary saying that battery usage at idle of around 1% per hour is usual, but I've also seen plenty of reports of usage of 2 or 3% over an 8-hour period. I'm in the 1% per hour camp.
I've applied the usual remedies, including turning off Wi-Fi and Bluetooth scanning.