Is there a particular app that's using a lot of battery.
Should find that in battery and device care
Tap on Battery
Tap on usage since last full charge.
There you will see a list of apps and top of the list will show you in percentage what apps are using the most.
If it looks normal, then maybe clear your phones partition cache
Also check that settings like NFC etc if you don't use them normally and on, and need to be turned off again
