1. install the old version of adobe flash player
2. Download and install Ungoggled Chromium
3. Use chromium to play the game.
if it is not work, ask me on discord. Cyanmaster#1504
Uninstall it and Install Flash Player 18. It will only work for chromium. When You install flash player 18, make you check "Never check for updates" If You see Run this time or update plugin, only click run this time. DO NOT click update plugin or it will take you to the Latest flash player and it will not work