How to query in many-to-many relationship ef-core

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C#

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I have 2 classes with joint that has been created by EF5
how can I do a query to get the list of products for specific project

in good old days it was simple I just needed to do this

select top(20) p.Id, p.Name from Product p
	  inner join ProjectProduct j
	  on p.Id=j.ProductId and j.ProjectId ='1'
	  order by p.Id desc

Now in EF world I am confused
seems I can't find a solid way to do that

public class Project
{
    public int Id { get; set; }
    public string Name { get; set; }
    public List<Product> Product { get; set; }
}

public class Product
{
    public int Id { get; set; }
    public string Name { get; set; }
    public List<Project> Project { get; set; }
}

public class ProjectProduct
{
    public int ProjectId { get; set; }
    public int ProductId { get; set; }
}

What I have tried:

var products = await _ctx.Project
                .Where(p => p.Id == id)
                .Select
                    (
                        p => p.Product
                    )
                    .FirstOrDefaultAsync();