For those that are trying to put a modern (Apple silicon) macbook air or pro into DFU mode, and cannot get the key combination right, what helped me is to give a slight tap to the Power button just before doing the four key combination for 10 seconds. The checklist is then:

• Have apple configurator 2 running in your “good” computer
• Have the target computer be connected to the good computer in the back usb-c port (the one closest to the back, or the left one if you see the computer from the side).
• Make sure the target computer is off.
• Give a tap to the Power button. Release the button immediately, this is just a tap.
• Immediately after, hold Power, left control, left option and right shift simultaneously for 10 seconds (use a stopwatch).
• After ten seconds, release all except for Power until the target mac appears in DFU mode in your source mac.

Good luck with the restore