Changing your password on Messenger can help keep your account secure from unauthorized access. To change your password on Messenger, follow these steps:

1. Open the Messenger app on your device.
2. Tap on your profile icon in the top left corner.
3. Scroll down and tap on 'Account Settings'.
4. Select 'Security and Login'.
5. Tap on 'Change Password'.
6. Enter your current password, then create a new password.
7. Tap 'Save Changes' to update your password.

Remember to choose a strong and unique password to enhance the security of your Messenger account. Avoid using easily guessable passwords such as '123456' or 'password'.