it is no use
Examples
It is no use to blame the looking glass if your face is awry.
It is no use saying, 'We are doing our best.' You have got to succeed in doing what is necessary.
If you board the wrong train, it is no use running along the corridor in the other direction.
It is no use waiting for your ship to come in unless you have sent one out.
It is no use crying over spilt milk.
It is no use fretting after last winter's snow.