Restart the MacBook Air
On the login screen, click the question mark or use the password reset option if shown
If available, enter your Apple ID and follow the prompts
If FileVault is enabled, use your recovery key when prompted
If you see a password reset assistant, follow the on-screen steps to create a new password
If you cannot reset from the login screen, restart into macOS Recovery
For Apple silicon, press and hold the power button until Startup Options appear, then select Options
For Intel Mac, restart and hold Command + R
In Recovery, open Utilities and choose Terminal if needed
Type resetpassword and press Return
Follow the Password Reset Assistant to select the user account and set a new password
Restart the MacBook Air and sign in with the new password
If you still cannot reset it, contact Apple Support