失敗しただけだった

only ended up failing

→ 失敗
phrase Rare #36,726
only ended up failing Emphasizes that the result was simply failure, often conveying disappointment. The subject is usually understood from context.
JA: 準備を頑張ったのに、試験では失敗しただけだった。
EN: Even though I worked hard to prepare, I only ended up failing the exam.

私は全力を尽くした再び失敗しただけだった

I did my best, but all I did was fail again.

もう一度試した失敗しただけだった

I tried again, but it only ended in failure.

彼は全力を尽くした失敗しただけだった

He gave it his all, but all he did was fail.

彼は再びやってみたが失敗しただけだった

He tried again, but all he did was fail.