YOU SAID:

my father once told me i am a failure

INTO JAPANESE

父はかつて、私は失敗者だと言っていました

BACK INTO ENGLISH

My father used to say I was a failure

INTO JAPANESE

父は私が失敗者だと言っていた

BACK INTO ENGLISH

my father said i was a failure

INTO JAPANESE

父は私が失敗したと言った

BACK INTO ENGLISH

my father said i failed

INTO JAPANESE

父は私が失敗したと言った

BACK INTO ENGLISH

my father said i failed