Hi alex_the_master,
For help with accepting the terms and conditions, test a normal restart of your iPhone. The steps below found in the article here can help to resolve abnormal behavior you may experience: Restart your iPhone
"How to restart your iPhone X, 11, 12, 13, or later
- Press and hold either volume button and the side button until the power-off slider appears.

2.Drag the slider, then wait 30 seconds for your device to turn off. If your device is frozen or unresponsive, force restart your device.
3.To turn your device back on, press and hold the side button (on the right side of your iPhone) until you see the Apple logo."
If the issue continues, ensure your iOS is fully updated after completing a backup, since updates contain security and bug fixes for your device: Update your iPhone or iPad If fully updated, or the issue remains after, try testing on a different device, since that can help us isolate the behavior further to the device or allow us to focus our efforts in another direction.
Let us know if the same behavior occurs.
Best.