First of all, open the installed software on the computer and then get your iPhone connected to the computer via the USB cord. Then this software will detect your device and scan for all the lost files. And you can now choose the right recovery mode as you needed and wanted!
Then different file folders will be detect and displayed on the left panel. You can then enter the different tabs to preview more detailed information. While previewing, select the files you want to recover from iPhone by ticking them out and hit the Recover option to recover lost files from iPhone.
Finally, just wait for the process to get completed within a little while.