If your goal is simply to play old .swf files or legacy web games, you do not need to install the original Flash Player plugin at all. Modern developers have created secure open-source emulators:
A modern Flash Player emulator written in Rust. It runs safely in your browser or via a desktop app without security risks. Flash Player V9.0.246 Offline Download
The Legacy of Adobe Flash Player V9.0.246 The release of Adobe Flash Player version 9.0.246 represented a pivotal moment in the evolution of the interactive web. Often categorized as part of the "Flash Player 9 Update 3" cycle (internally codenamed "Moviestar"), this specific version was more than a routine security patch; it was the catalyst that brought high-definition video and hardware-accelerated rendering to millions of desktop browsers. Technical Significance If your goal is simply to play old