Not sure why you try to open the -bin file?
If I unpack the .bz2 file and double click the waterfox file, it worked.
Another way is to download a .deb file from maybe:
https://software.opensuse.org//download.html?project=home%3Ahawkeye116477%3Awaterfox&package=waterfox-classic-kpe
Install it with GDebi Installer from caja.