I want to complete the attack animation settings, please help me

Hello, all the great creators and kind helpers. I am trying to make my own mod. I have never learned Java and I rely on some scattered tutorials to learn how to use it. Now I need to know how to write a process that allows my creatures to try different attack methods when attacking. I tried to write it myself, but there are many problems, such as the attack animation plays when the creature attacks but moves in parallel, and the attack cannot cause damage at the same time as the animation. I hope to find a complete process case for me to learn. Thank you.     https://imgur.com/gallery/help-me-YQzy4uu