This is so true, and it's unbelievably frustrating. I used to be able to get through an entire day with significant use on my Pixel 9 Pro XL and get home with still about 45 percent battery left and now I'm lucky if I'm above 10 percent before I begin my drive home.
Google really needs to get this in check or it's going to become unusable and impractical for me.
It's all the AI crap. Seriously, disable all the AI on your phone and your battery will last 2 full days.
There are a lot of apps that run in the background. Check those also