The Victory That Feels Like Defeat
A Pyrrhic victory is a win that inflicts so much damage on the victor that it is practically a defeat. Sometimes, achieving your objective costs so much in resources or morale that you have nothing left to celebrate.
This term originates from King Pyrrhus of Epirus, whose army suffered irreplaceable losses while defeating the Romans in battle. Even though he won the day, he famously remarked that another such win would leave him entirely undone. It serves as a haunting reminder that not every triumph is worth the price you pay. History is filled with leaders who achieved their goals but destroyed their future in the process.
Source: Pyrrhic victory