Rotation problem of two different prefabs

Hello, I have a problem that I have been struggling with and cannot find a solution to.

That is,

I Have a Character and a Weapon, both have animations.

I'm trying to combine the character and weapon using Animation Rigging, but there is a problem!

The rotation of my character and the rotation of my weapon are different,

character rotation; Green arrow > down - up Blue Arrow > Forward - Backward Red Arrow > Right - Left

Weapon Rotation; Green Arrow > Right - Left Blue Arrow > Down - up Red Arrow > Forward - Backward

How can I use the same rotation on my two objects, make both Local or Global?

I may have explained it a little confusing! I'm sorry for that.

Thanks for your help.