50% battery loss overnight due to camera

Iphone 14 pro max. 100% battery health and very good battery performance.

I went to sleep with phone on nearly 50% battery and woke up thankfully before my alarm for work and it was dead. It says the camera drained the battery but you can see there is no usage during that period. The camera shows 1 minute. This happened a few days ago and IOS is/was up to date. Not very good thinking my phone can just die at any point and leave me without my alarms or people being able to get in touch.