Hello, I'm sorry to hear about the trouble. Regarding the battery life, if you just recently purchased the phone, this is completely normal for the battery to drain a little faster than normal while in use for the first couple of days once the adaptive battery learns your usage pattern, you'll notice that the charge will last a longer. Keep using your device in the meantime, so that it will learn your usage patterns. Something to keep in mind too, when there's a big update, it may reset the learning patterns, that's why some may experience this after updates. If it doesn't get better within a few days it may be an application that's causing the drain, Check out this link; https://www.samsung.com/us/support/troubleshooting/TSG01001388/
If those troubleshooting steps are followed, and you still are having issues, I would recommend taking the device to a technician to perform diagnostics or a potential reflash of your software. http://www.samsung.com/us/support/service
Your phone is learning your usage patterns, so it usually takes about a week or two until you get the full potential of the battery. When I got my S23 Ultra, it did the same thing.
