If you are a developer or archivist specifically looking for the original Adobe files for preservation purposes (and not for web browsing), archives such as the Internet Archive or specialized software archives host the final versions of the standalone Flash Player (Projector). Note that these versions will not work inside a web browser and may trigger security warnings on Windows 10.
Adobe released a “Flash Player Projector” content debugger. This standalone .exe runs SWF files directly. adobe flash player download windows 10
This article explains why Flash Player is gone, the security risks of seeking it out, and how to handle legacy content that still requires it. If you are a developer or archivist specifically
If you have old SWF files (e.g., archived games, educational software, old presentations) or need to access a legacy intranet site, you have three safe options. This standalone