Yes, technically, but not right away. There is no procedure in place that allows someone who has changed their name to go back to their previous name. You must wait 60 days or six months after the last name change for a certain name to become available in the name pool again.
You can return your old name if the name is still available after six months and you have not changed your name in the previous 60 days. Because this is a time-consuming procedure, it is wise to consider it again before proceeding.