Go to Settings on your iPhone, iPad, or Mac
Tap your name at the top
Select Sign-In & Security or Password & Security
Tap Change Password
Enter your device passcode or current Apple password if prompted
Enter your new password
Confirm the new password
Tap Change or Done to save the update
If you do not have access to a trusted device, go to iforgot.apple.com
Follow the on-screen steps to reset your Apple password