A proverb meaning that even if someone fails or suffers a loss, they will turn it to their advantage or learn something from it.
彼は失敗しても落ち込まない。転んでもただでは起きないタイプだ。
He doesn't get down after failing. He's the type who always turns things to his advantage.
プロジェクトは予定通り進まなかったが、学びが多かった。転んでもただでは起きないね。
The project didn't go as planned, but we learned a lot. We certainly turned it to our benefit.
あの商売人は交渉で大失敗したが、結果的に別の契約を取ってきた。転んでもただでは起きない。
That merchant failed badly in negotiations but ended up securing a different deal. He never comes away empty-handed.