Why reference properties works only through context

I solved second issue (A parameterless constructor was not found... exception) like this:

1. I setted default constructor of Entity class and sub entities as protected

2. When I load entity from DB Context property of entities will be null, because EF uses default constructor. That's why I created my own IQuerable collection. It sets Context property when it's not setted:

   class IContextable<T> : IQueryable<T> where T : Entity {

   public IQueryable<T> SourceQuery { get; set; }
   public KitchenAppContext Context { get; set; }
   public IContextable(IQueryable<T> query, KitchenAppContext context)
   {
       SourceQuery = query;
       Context = context;
   }
   
   public Type ElementType => SourceQuery.ElementType;
   
   public Expression Expression => SourceQuery.Expression;
   
   public IQueryProvider Provider => SourceQuery.Provider;
   
   public IEnumerator<T> GetEnumerator()
   {
       foreach (var entity in SourceQuery)
       {
           if (entity.Context == null || entity.Context != Context)
               entity.Context = Context;
           yield return entity;
       }
   }
   
   IEnumerator IEnumerable.GetEnumerator()
   {
       return this.GetEnumerator();
   }
   }
   

And my GetEntities method in my Context class:

public IQueryable<T> GetEntities<T>() where T : Entity
    {
        IQueryable<T> query = Set<T>();
        return new IContextable<T>(query, this);
    }

Maybe, there was better ways, but I couldn't found them. It works now, but I'm still waiting for good answer