You enabled VoiceOver on your phone.
Press and hold the side button to talk to Siri, and say “Turn off VoiceOver.” If you enabled the accessibility shortcut, you might be able to turn it off by triple pressing the side button (upper button on the right side of the phone).
If neither option works, you need to go to Settings > Accessibility > VoiceOver and turn it off. To navigate with it on, you can enter your passcode by tapping on a key, then double tapping the same key. Repeat this for each character in your passcode. Then tap the Settings app icon, and double tap it to open it. Repeat for opening the Accessibility menu, then VoiceOver menu, then the off switch. To scroll, use three fingers and swipe up or down on the screen.