In Apex Legends, ViewMatrix is nested inside the ViewRender subsystem:

uintptr_t viewRender = Read<uintptr_t>(baseAddress + OFFSET_VIEWRENDER);
uintptr_t viewMatrixPtr = Read<uintptr_t>(viewRender + 0x1A10); // Offset to Matrix4x4
Matrix4x4 viewMatrix = Read<Matrix4x4>(viewMatrixPtr);

Matrix is updated every frame by the camera render pass. Reading this gives instantaneous camera rotation and field of view for screen projections.

ViewMatrix pointer chain is super stable across updates.

Confirmed working. Perfect alignment with in-game crosshair.