After used Samsung A54 for 3 weeks, I noticed my device started to consume 10%-15% of battery while I sleep and it keep happening all night until now. I also noticed that enable power saving and use of standard screen refresh rate does not give huge difference in term of battery life. Please fix this issue T^T"
too much background apps running.
put those apps in deep sleep (type this in the settings) mode except the apps u want to receive notification on time.