When pressing left mouse button it doesn't run the animation I want.

Hello, so when i’m pressing ‘Left Mouse Button’ It doesn’t run the attacking animation.

This just flips the boolean on and off.
Check where your code is testing against this boolean to trigger the animation

Also isn’t this conflicting? Because pressing the Left Mouse Button is going to turn it on, then turn it off after a Duration of .56.
So even if there’s a place where this boolean is being checked, I don’t think it would run much of anything since it has no chance to really even make an input before turning off.

Hadn’t even seen that it’s so short.