You will be able to find ‘copies’ online which you can put onto a 3.5″ disk.
But also many of the GOG releases are the original Floppy files, but bundled with dosbox, so you can copy over the raw game files and still execute them on real hardware.
I’m not sure of a way to tell before hand however which games are simply packaged and which are rebuilt.
You are better off searching for your game on google and grabbing an.. ‘archived’ copy for the original files.
