Macbook pro is not turning on

hello, i have a 2017 macbook pro and is not turning on. A flashing folders with a question mark is shown. I have tried to reinstall the macOS from recovery mode, it didn t work, i have tried to run the first aid, it gave me an error, i can not enter in safe mode or single user mode. I do not have a backup, but i need 1 single file from the mac, so i can not erase the disk. What can i do ? 😔