Iphone 16 pro 5 hours battery life

According to Apple's own battery stats, it looks like my Iphone 16 pro that cost 1200$ can only handle 5 to 6 hours of active screen. I tried to disable Apple intelligence, Widgets, black wallpaper and lock screen, lock to 60 fps, low battery mode constantly, remove background app refresh, turn off data and Wifi.

I was on the phone with a ''Senior technician'' and she did not know the difference between an App icon and a Widget and was talking to me like if I was clueless :'D.

Anybody experiencing the same thing? It's really disappointing