Battery draining fast

Actually note 10 plus had very good battery life in android 9. But after 10 update the battery drains quickly. I sent one error report to Samsung saying I never changed any settings from previous version, intact I not even installed any 3rd party app except WhatsApp. I disabled Facebook, few Google apps, briefing, also disabled location history, NFC, find my mobile, auto sync, auto update, location bluetooth scan, nearby device, weather auto update. but still battery drains quickly. They sent the below standard reply and not even read my report fully.

Dear Samsung Member,

We would like to inform you that after analyzing
the log files we find that Screen On Discharge is
caused by using Youtube, chrome and whats
app for a long time with data usage and used a
lot of Apps switching and both of discharge rate
are within a reasonable range regarding user's
action.
Screen Off Discharge is within reasonable
range. There are used Bluetooth , BLE Scanning
on, phone call and whats app at background
Additionally, if you charge battery 100% you can
use more than 22 hours.

BLE scan is for recognizing specific place by
scanning Bluetooth device. If you don't need this
function, you can turn off like below.
[Settingsj-)]Connectionsj-)IMore connection
settingsj-)INearby device scanningl off
[Setting s]-)]Connectionsj-)ILocationj-)j] mp rove
accuracyj-)IBluetooth scanningl off
[Settingsj-)IGoog]ej-)INearbyj-)Upper right
menu ISettingsj-)Please turn off all options
[SBrowserj-)Upper right menu IExtensionsj-)
[CloseByl off


Can't do anything