내가 잘못

I mistakenly…

→ 나
phrase Rare #25,778
I mistakenly… Usually followed by a verb describing what you did incorrectly.
KO: 내가 잘못 이해했어.
EN: I misunderstood.

내가 잘못 생각했어

I was wrong

— I Saw the Devil (2010)

내가 잘못…

It was my fault…

— RRR: 라이즈 로어 리볼트 (2022)

내가 잘못 들었나?

Did I hear wrong?

— 퍼니 게임 (1997)

내가 잘못 봤군요

I must have seen it wrong.

— 자전거 도둑 (1948)