Nothing so bad but (it) might have been worse proverb
Although things are currently bad, they could have been worse.
I lost all their possessions due to the flooding. Fortunately, my family is safe. Yeah, nothing so bad but it might have been worse.
Mary: I've got a bad grade in English Peter: Do not worry. You can try harder next time. Nothing so bad but it might have been worse.
To punish someone or something harshly
When you experience extreme and undesirable situations, it is probably essential to take extreme actions
Once something has been done, you can do nothing but face the consequences.
The origin of this expression is not clear.
Try to avoid to change something because doing something else could make things worse
I could have changed my answer, but I decided to leave well enough alone.