How to control third person aim up and down animation?

HI, I’ve been working on a third person game, and I am trying to get the character look up and down according to camera rotation, using the animation. But I can’t figure out how to achieve this.
FPS_personal_project - Level_00_Main - Windows, Mac, Linux - Unity 2022.3.25f1 DX11 2024-09-02 12-45-13.mp4 [video-to-gif output image]
Animation that aims up and down(gif above)

Try using IK

Using IK will work but I really want to do it using the animation. Anyway to achieve this?

You can create a blendtree with four clips (up, down, left, right). with 2D Simple Directional type Then you can blend them just like how you control the character to move forward, backward, left, and right. But here the blend posX/Y may depend on how your perspective is defined.