LINQ C# complex nesting structure

Question

I managed to make a selection from the complex structure of the object, but only with the help of foreach, how can I avoid this foreach and solve my problem, just using LINQ

Answer 1

Are you looking for something like this?

product.ForEach(item => item.Strucutre.CheckList.Checks = item.Strucutre.CheckList.Checks.Where(w => numbers.Contains(w.NumberAsInt)).Select(w => w).ToList());