YOU SAID:

I can't believe I was successful with that, as all other attempts have fallen flat

INTO JAPANESE

私は他のすべての試みのフラット落ちていると、私は、成功したなんて信じられない

BACK INTO ENGLISH

I can't believe I fell flat in all other attempts, I was successful

INTO JAPANESE

私は他のすべての試みにフラット、成功したなんて信じられない

BACK INTO ENGLISH

I can't believe I was successful flat, all other attempts to

INTO JAPANESE

私にフラット、他のすべての成功した試行だったなんて信じられません

BACK INTO ENGLISH

I can't believe I was flat, all successful attempts

INTO JAPANESE

私はフラット、すべての成功した試みだったなんて信じられません

BACK INTO ENGLISH

I can't believe I was flat, all successful attempts