C++ runs most AAA video games like Call of Duty and Unreal Engine itself. Game studios choose C++ because it executes fast enough to render millions of polygons per second. Operating systems like Windows and macOS have core components in C++.
Web browsers like Chrome and Firefox use C++ to parse HTML quickly. Adobe Photoshop processes images using C++ for speed. High-frequency trading, medical devices, and spacecraft software all rely on C++ for performance.
If speed matters, C++ probably powers it.