＂iPhone is findable＂ but won't charge

but won't charge even though I left it plugged in all night. It's frozen on the screen with this message and low battery. Phone is 1 month old， then the volume down button， but the phone won't open. I also tried removing the device from my "Find my" list. Is there another way to force restart? Any other ideas? ， then holding the side button， My phone displays the message "iPhone is findable"， iPhone 13. I tried pressing the volume up button，。