We had the civil wars a century and a half earlier.
They resulted in the king being killed, although no-one wanted thay at the start, and a commonwealth being established for a while. Then a king was restored.
It is estimated that between 100,000 and 200,000 people were killed over that period.
At the start of the French revolution, no-one wanted the king to be killed, but he was. Following the revolution a king was restored.
It is estimated that around 100,000 people were killed across France.
Looked at like that, the two were not so different.