I’m locked out of my phone

If your iPhone is running iOS 15.2 or higher........

How to reset your iPhone, iPad, or iPod touch when you forgot your passcode - Apple Support

If your iPhone is not running iOS 15.2 or higher........you must use a computer.

If you forgot your iPhone passcode - Apple Support

If you have a backup of the phone, you can use that to restore the data on the phone during the new setup.

If you forgot your passcode, use the instructions in the link at the top of the page.