안 되더라고요

it didn't work

→ 안
phrase Rare #30,288
it didn't work Used when reporting that you discovered from experience that something didn’t work or wasn’t possible. The ending adds a sense of firsthand observation.
KO: 저한테는 그 방법이 안 되더라고요.
EN: I found that method didn’t work for me.

그렇게는 정말 안 되더라고요

It really just wouldn’t work that way.

— 시카고 (2002)

전 이상하게 그게 안 되더라고요

For some reason, I just couldn’t do it.

— Pavane (2026)