Use the Find My app to mark a missing iPhone, iPad, iPod touch, Apple Watch, Mac, supported AirPods, or iPhone Wallet with MagSafe as lost. In order to mark a device as lost, you must Mark AirPods as lost in the AirPods User Guide.
After you mark your iPhone, iPad, iPod touch, Apple Watch, or iPhone Wallet with MagSafe as lost, you can adjust the information in the Lost Mode message.
Go to the Find My app If you forgot your Apple Account password.
Intel-based Mac: Enter the numeric passcode on the Mac to unlock it (the one you set up when you marked your Mac as lost).
If you forget your passcode, you can recover it using Mark an AirTag or other item as lost in Find My on iPhoneApple Support article: If your iPhone, iPad, or iPod touch is lost or stolen