This animation is still so stiff, try something like an attack that actually lunges forward instead of making it look like she's just pawing the air gently/something in front of her face

Your newest animation, it looks like shes comically hitting someone over the head. "Thunk!"

I believe this 7 minute edit hits the nail on the head
This arm raises quickly for an attack and then swings forcefully down with a 3 frame swipe effect as the character moves forward.
It's important the swipe effect is not attached to the arm, aka: your new animation, this allows it to be like a short-ranged 'ranged' attack.