Can't get `Include` to work with EF core , without FK

I have 2 tables in SQL server without a FK :

So each Image has many Comments.

Using this command I've created scaffolded files :

dotnet ef dbcontext scaffold "Server=sff-pc;Database=IMG;Trusted_Connection=True;" Microsoft.EntityFrameworkCore.SqlServer -o Models -t Images -t comments --context-dir Context -c MyContext -f

Here are the generated files :

 public partial class Images
    {
        public int ImageId { get; set; }
        public Guid ImgGuid { get; set; }
        public string ImgExtension { get; set; }
        public DateTime Datecreated { get; set; }
        public string Origin { get; set; }
        public decimal? Size { get; set; }
        public string Ip { get; set; }
        public int UserId { get; set; }
        public string Description { get; set; }
        public bool? IsActive { get; set; }
        public int? VotesUp { get; set; }
        public int? VotesDown { get; set; }
        public int ImgType { get; set; }
    }

public partial class Comments
{
    public int CommentId { get; set; }
    public int ImageId { get; set; }
    public int UserId1 { get; set; }
    public string CommentTxt { get; set; }
    public DateTime DateCreated { get; set; }
    public bool? IsActive { get; set; }
}

Question:

Using those generated classes and this full context file, How can I get each Image and Include its comments?

What have I tried :

I've tried adding the ForeignKey attribute :

 public partial class Comments
    {
        public int CommentId { get; set; }

        [ForeignKey("Images")]          <--------------Here
        public int ImageId { get; set; }
        public int UserId1 { get; set; }
        public string CommentTxt { get; set; }
        public DateTime DateCreated { get; set; }
        public bool? IsActive { get; set; }
    }

And to run this :

        var context = new MyContext();
        var result = context.Images.Include("Comments"); //exception

         foreach (var a in result)
         {
             Console.WriteLine(a);
         }

Exception :

The property 'Comments' is not a navigation property of entity type 'Images'