Originally, Adobe distributed the standalone player at https://www.adobe.com/support/flashplayer/debug_downloads.html . Post-2020, Adobe has largely removed these files. However, they can still be found via the for versions up to v32 (the last major release).
Are you running this on ?
Click File > Open , then click Browse to select a .swf file saved on your hard drive. fpsoftware flash flashplayer-32-sa.exe