If you are interested in the actual progress of PS4 emulation, follow these credible, open-source projects. None of these are currently capable of running major AAA games at full speed, but they are the only real efforts:

A project focused on emulating both PS4 and PS5, though development has slowed.

The "PCSX4" project is a long-standing hoax. Real emulation projects are typically open-source and hosted on platforms like GitHub; PCSX4 uses a polished, professional-looking website to trick users into downloading "installers" that require "verification keys" obtained through malicious links.

For news on emulation, rely on community-trusted sites like RPCS3.net or Emulation General Wiki .

A compatibility-layer-based emulator that can run many 2D and "smaller" indie titles.

Legitimate emulators will never ask you to complete a survey or click "human verification" ads to unlock the software.