How do I fix this smooth shading?

[castiielly_games]

Hello! I want to smooth shade my model, but this happens…does anyone know how to fix it?

Wireframe:
https://drive.google.com/file/d/1jBBm0rD4yPjNoNktqhY5hiOrBWNdp6kt/view?usp=sharing

[APEC]

Need more info or better blend sample file.
Mesh imported from FBX?

[castiielly_games]

https://drive.google.com/file/d/1NYFwmwAHdTnLcrRIaEEewYOo5h5bxlS9/view?usp=sharing
this is the blend file

i did the mesh myself, so I didn’t import anything

[APEC]

1. Apply scale to the mesh “Object - Apply - Scale”
2. Then RMB on mesh - Shade Smooth
3. and click Auto Smooth in Normals section
   
   
   
   also increasing slightly Auto Smooth value can smooth some edges more
   
   

[castiielly_games]

thank you so much!!