What could be the reason behind my battery drain?

[strongst]

Shall do. It's weird cause i had the problem on OOS first. I shall go full stock in a couple of days. Maybe it could be that the kernels are a bit older than the current OOS versions. I have uninstalled fitbit's app and the cricbuzz app for now. I shall have to manage the phone carefully for a few months if the problem doesn't go away ? Thanks anyway!

Can be also app related, but bbs does not clearly reveal your issue

 

[kash296]

Can be also app related, but bbs does not clearly reveal your issue

Just wanted to leave you an update. Reverted back to latest OOS with stock kernel + magisk. Battery is good. Probably was just some firmware issue when i was on the custom rom. When i switched to pixel experience, i was on 9.0.5 OOS. I then flashed 9.08 fw and then flashed the custom rom. While ideally i don't think that should be a problem, I guess it was probably the reason why battery went south. Anyway, all good for now, will install my fitbit app again to see if any problem still exists. Thanks for taking the time out to help me!