It'll make your Mac boot from USB in just a few clicks. Disk Drill is by far the most convenient and up-to-date macOS bootable file rescue solution.
Set it aside, calm down and download a bootable data recovery app using any other computer. You can turn your computer off, remove the drive in question from the docking station, do whatever may be required to prevent any further utilization of that drive. The initial recommendation given to anyone who lost important data and would like to proceed with the data recovery is always to stop using the drive where the data was stored as soon as possible.
