MacBook Air Account Lock

• If it is your Mac's User Account that appears to be locked, refer to If you forgot your Mac login password - Apple Support. Follow those instructions all the way to the end, which leads you to If you can't reset your Mac login password - Apple Support. Follow all of them too, all the way to the end.
• If it is your Apple ID Account that is locked, refer to If your Apple ID is locked or disabled - Apple Support. In that case, the following may also be applicable: If you see an 'Unable to sign you in to your Apple ID' message - Apple Support.

Lastly, I don't know why you chose to use Terminal or anything else to change a Login password. The correct way to do that is described here: Change the login password on Mac - Apple Support. If you changed it some other way, describe what you did to the best of your ability, and I'll try to find a way to undo the mess that may have ensued.