The PS5 DualSense controller maintains PS4 DualShock's worst design decision
The Playstation 5 DualSense controller only works in the main menu, not in games.
The PS5 DualSense Controller Works With The PS3 And Nintendo Switch But Not The PS4
How to use a PS5 controller on the PS4 - Dexerto
Sony PS5 DualSense Wireless Controller - Midnight Black
New PS5 Update Has Improved DualSense Rumble For Backwards Compatible Titles
PS5 FAQ: games, apps, PS4 backward compatibility, storage, and more - Polygon
PS5's DualSense Is Now Compatible With Your iPhone, But Still Won't Work On A PS4
Does a PS5 Controller Work on PS4?
PS5 DualSense Controller Works Perfectly On PS3 (But Not PS4)
Buy DualSense Edge™ PS5™ Wireless Controller