Help with blender and Unity

I created a map with multiple objects in blender. I copied and pasted all the folders with the textures and projects into the folder in Unity.
The problem is when I load the blender project into the scene in Unity, most textures appear in the wrong place. For example, in blender an object with grass texture in Unity appears with concrete texture.
Important: in blender all the I applied all the textures to the objects with UV Mapping (Unwrap). Thanks

First check that in Blender, all your textures are assigned to the right material via the texture tab and the little “F” next to the texture and material are checked. If that doesn’t solve it, you might want to export as an fbx file (or obj)from Blender directly to your Unity Assets folder (or whatever folder you’re working from). This is how I do it. It seems as though things have to be perfectly placed and assigned in a certain way in order for Blender and Unity to play nice with each other.