Hi christiancalimlimx13,
If you feel like the battery drains during screen on, please check if it drains more when using any certain apps.
We would suggest you test how much the app drains after using it for a certain time:
Please first clear the background apps, and check how much battery is consumed from 100% after using the app for a certain time (e.g. 30 mins or 1 hour.)
Please show us two screenshots of the battery usage after testing.
1) Settings > Battery
2) Settings > Battery > tap the "battery icon" to access battery usage
Please also check your PM for a message I have sent you.
Thanks for your help 🙂