本当に残念だ

it's really a shame

→ 本当に
phrase Rare #32,248
it's really a shame Expresses sincere regret or disappointment. だ can be replaced with よ or ね for emphasis or to seek agreement.
JA: 試合に負けて、本当に残念だ。
EN: It's really a shame that we lost the game.

ごめん本当に残念だ

I'm sorry. That's truly unfortunate.

— セッション (2014)

本当に残念だと思う

I think it's really unfortunate.

彼が試験に落ちたとは本当に残念だ

It’s such a shame that he failed the exam.

本当に残念だ

That's really unfortunate.

— 善き人のためのソナタ (2006)

本当に残念だ

That’s really too bad.

— キャッチ・ミー・イフ・ユー・キャン (2002)