Dear Samsung Member,
Greetings from Samsung Customer Support!
Kindly perform the below mentioned steps and be assured it would resolve you issue:
1) Battery optimization:
Settings > Select Device Maintenance/Device Care > Optimize > Optimize all options like Battery, Storage and Memory
2) If issue has not been resolved then turn off bluetooth, Wi-Fi, mobile hotspot, NFC etc.
Swipe down on the home screen to open notification panel > Tap on Bluetooth, Location/GPS, Wi-Fi, Mobile hotspot, NFC etc. to turn off.
Kindly visit the given links for the complete tips on battery drain issues:
If the issue still persists kindly attach the log file and send it to us in the Samsung member application(attach when the issue occurs within first 15 minutes of the occurrence of the issue.):-
Samsung Members App > Feedback >Error report > Attach log file.
Thank you for writing to Samsung.
Samsung Customer Support