Do I have to manually assign every texture to material?

Hello, I have limited experience with 3d Modelling/Texturing ect. I'm hoping you can help save me a headache!

I downloaded an .Obj model of a detailed interior room. The model has about 200 separate meshes & around 120 textures.

In the folder I downloaded there is an .Obj file, .Mtl file & a folder with all textures.

If I import this folder into Unity, it creates the Materials folder, but all the materials are blank/grey. Then, if i drag and drop the appropriate texture onto the mesh, or into the albedo of the material, then it works fine (correct UV coordinates).
The issue is that it would take me forever to manually assign each texture.

I've tried making sure the "Textures" folder is in the same folder as the Model. ect. If I open the .Obj in Blender, all the textures are applied correctly. But when exporting .Obj or .Fbx to Unity I still have the same issue.

How do I import this model into Unity, with the textures automatically assigned to the materials? (without having to do it manually)