Different weapon animations

I’m making a 3D-Pixel-TopDown-SurvivalGame.
I Want a Different animation when i hold a axe in The Hand than when I hold nothing (hands).
Now my Question: How can i make this!

Idea : A Script which finds out what Weapon am Holding (with Tags maby) and then make The animation i’ve made!

I dont Want you to Write a Code for me, I Want you to give me some tips How i could make that

Thanks For helping

@_Sewa - Are you using sprites? I would think you would need sprites for the different positions that you are holding the weapons.