Ranged mob weapon and projectile texture

I’m trying to create a centaur that uses a bow and arrow for Minecraft 1.20.1 using MCreator 2023.4 and Blockbench.. However, I can't get the centaur to hold the in-game bow in its hand. When I check the "Enable ranged item" option in the AI and Goals section and select the arrow as the item, it just shoots the projectile like in the image. What I want is for it to shoot like a skeleton and hold the bow in its hand. Can you help me with this?

https://imgur.com/a/4FuUzLE

my in-game settings:
AI and goals: https://imgur.com/a/Crz5rGj
Behavior: https://imgur.com/a/w2ppudo

Note: This mob should only attack monsters, not all mobs or players. Also, golems shouldn't attack this mob. That's why I set its type to "Creature".