Blender to Unity Problem

I designed a chair (very noob to blender and unity) after that I exported as FBX. After importing at Unity chair doesnt have materials as I designed, and the model was damaged. Here some pictures.

rendered

https://pasteboard.co/HYrwNlh.png

3d model

https://pasteboard.co/HYrwBRe.png

unity
https://pasteboard.co/HYrw56J.png

 

"damage" looks like flipped or one sided mesh, can try do 'flip normals' in blender.

missing materials, not sure what kind of material (or shader) you are using in blender, its probably not supported in unity.. (i think it only brings certain textures if assigned)

 

I flipped normals and it worked for that broken part thank you
and my material is mixed shader ( diffuse BSDF and glossy BSDF)