better than tutorials, watch others animate – https://www.youtube.com/watch?v=8VjF8zL_COY

These two are good way to start.

it’s really not that good. the limbs constantly contract and extend. Like look at that left forearm going up and down.

Moves lack a lot of flow and also go stop and go which is a big issue for organic movement.

there’s also issue with just the composition i guess. Blood overlaying the character on few frames, person randomly stepping back very suddenly, not much of enough timing on the attack, leaving people confused on what just happened.

While… It has potential, there’s still a lot of unnoticed issues.
I’m not saying it’s bad, im just pointing out problems so you can try to look for them next time. Good job overall tho.