I get very similar numbers with my iPhone 13 Pro.
My heaviest day was on Tuesday with 4h 4min SOT and 11h Background Usage, ended the day at 25%. Note that I didn't restore from a backup, this was a clean install. And I think the numbers are normal. I'm currently travelling so lots of GPS and Cellular usage, plus lots of brightness fluctuation - not sure if it's the same for you. I believe the folks who are getting 8h of SOT on their standard Pros aren't actually leaving the house.
And when I'm in the hotel in the evening, my battery usage is quite good as well, because then I can use wifi, low brightness and don't need GPS.