Adobe included a built-in kill switch in later versions of the player that prevents Flash content from running in any browser after January 12, 2021.
Ruffle is a modern, open-source Flash Player emulator written in Rust. It does not require you to install the risky Adobe software. Adobe Flash Player Download For Windows 10 64-bit
While you cannot safely "download" the original plugin for modern browsers like Chrome or Edge anymore, you can still access legacy content using these secure alternatives: Adobe included a built-in kill switch in later