I would hope that your new phone lasts more than 24 hours regardless. I also may not be terribly with it, but I'd also hope that no one is trying to stream video 12+ hours a day.
I have to admit I do the same sometimes with podcasts on YouTube.
For anyone interested, NewPipe and Youtube Vanced are solid alternatives that allow you turn the screen off during playback without a monthly charge.
Now I’m reluctantly paying Google for Pro. It’s worth it to avoid the ads on my Roku etc, but I just hate giving them money :(