iPhone 14 battery drain

I charged this piece of feces fully at 10:21 pm last night. Sent one text. Woke up to 70% power. It drains in the course of a day and I use it very little. I noticed one thread that seems to blam ios 17.whatvever.whatever. I have 17.4.1 This just started recently. I have no idea when the ios was installed. I have looked up what to do and to the best of my poor ability to understand what is recommended I have turned off things running in the background. I don't know how to find such things. I did this before recharging. It hasn't worked.