The exported animtion is different with design

Hi,

I'm facing an issue where the exported animation looks different from the original design.
* This is the design – the character shoots straight ahead: UMotion.mp4
* This is the exported animation – the character shoots about 45 degrees to the left, and the legs also move unexpectedly:Exported_Animation.mp4

* And this is my exported config:

What is the problem and how to solve it?

Thanks!