Battery drain

Please go through the following links.

• iPhone Battery and Performance - Apple Support (IN)

Protect & Prolong the life of your iPhone's Battery: Batteries - Maximising Performance - Apple (IN)

Try some of these options too.

1. Avoid Screen Mirroring
2. Put on Low Power Mode
3. Put Auto-Lock on (1 min):- with the Low power mode it will be 30 Sec
4. Disable Push notifications for apps you do not use often
5. Keep your iPhone Facedown to prevent notifications to light up the screen
6. Enable Auto-Brightness:- Settings > General > Accessibility > Display Accommodations > Auto-Brightness [Enable]
7. When possible, manually lower the brightness from Control Center
8. If you want to watch continuous Videos/Movies. Stream it on TV or a Monitor
9. Don't force close apps; Apps that are not on the frontend screen are paused by the system to save energy. Apps require more energy to re-launch. Apps that are open in the background use large memory is a myth and quitting them is counterproductive
10. Location services may please be allowed only while using the app. Avoid the "Always" option wherever available
11. Set your iPhone to fetch email & Calendar data from the internet less frequently
12. Turning off Background App Refresh 
13. Charge before it drops below 20-30%
14. Try connecting to trusted Wifi wherever available instead of a Cellular
15. Periodically Check the Battery Health (Settings > Battery > Battery Health)

I was experiencing horrible battery drain with my iPhone 14 Pro Max. I did every possible thing to preserve battery life as well. Nothing worked. One person responded in another post that they simply turned off automatic backup to iCloud for Contacts. It actually worked!! My battery went from lasting 10 hours and I literally around 30 hours. This all happened since yesterday and today. Try it then power your phone off and back on and just keep off contacts backup until you add some then toggle it on and let them back off then turn it back off. I’m completely shocked turning this off worked but it did!

But with the same or similar settings that you have mentioned - except for the low power mode, iOS 16.1 had terrific battery life. iOS 16.1.1 is a total mess with battery life on iPhone 14 pro max.