There’s so many posts about battery drain here and in each of them the same apps are shown at the top of the usage list—Whatsapp, Instagram, Youtube. Same for me, Youtube even with Revanced is draining as much battery on 1080p videos as gaming at highest settings.

I consistently get 8-11 hours of screentime daily on everything except social media + gaming. Which also appears to be the case for other people in the same battery drain threads.
Yesterday I played ZZZ for 4.5 hours and went from 90 to 2% battery. If the battery usage tracking is accurate, that suggests youtube is using nearly the same amount which is concerning.
I think people are underestimating just how much battery social media can use and overestimating how much power their 5000 mah battery can produce