My MacBook Pro won't start up.only gray screen

Hi there,

My MacBook Pro won't start it show only gray screen (with apple logo )

And I have tried these solutions none of them worked

1/ Reset PRAM and NVRAM

2/ Restart in safe mode

3/Run Disk Utility in Single User Mode

After I tried third option it shutdown by itself

Please I need data inside the laptop , i have no backup

what should I do ?

I need some kind of solution does not contain formatting or deleting my data

Thank you in advance