How to grab a file and have it download on to the users computer that's not in wwwroot in c#?

Question

So I have this function that's downloads a file from a specific path and the path is in a complete different folder path than the wwwroot. The folder is in a shared network folder. Nothing is downloading when it returns but i get no errors and it does say the file exists. When i change the return from PhysicalFile to File its says the files does not exist.

 public FileResult DownloadFileFromFolder()
    {
        
        IEnumerable results = DataLayer.GetData(111);
        foreach (Objects things in results)
        {
            if (things.ID == num)
            {
                filepath = things.FilePath;
                filepath = filepath+"/copy.xlsx";
                break;
            }
        }
        FileInfo myFile = new FileInfo(@filepath);
        bool exists = myFile.Exists;
                            
        return PhysicalFile( myFile.FullName,"application/octet-stream",
                    "Returned_file.xlsx");
    }

I try to use static folder but i dont think im doing it right

 public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }
        else
        {
            app.UseExceptionHandler("/Home/Error");
        }
        app.UseStaticFiles();

        app.UseRouting();
        app.UseCors("Policy");
      
        app.UseStaticFiles(new StaticFileOptions()
        {
            FileProvider = new PhysicalFileProvider("//path/to/folder/"),
            RequestPath = new PathString("/folder"),
        });
        
        app.UseEndpoints(endpoints =>
        {
            endpoints.MapControllerRoute(
                name: "default",
                pattern: "{controller=Home}/{action=Login}/{id?}");
        });
    }