Well, firstaway I would like to talk about Tom Hanks great acting, he was great in this film, His facial expression alone could convey the entire feeling of the film.
Although this movie has a very calm rhythm but it keept the viewer with itself until the end without any interruption and thay‌‌‌‌ haveand they emphasize having a good friend, a good drama with lovely performances.
And this point of the story was interesting to me that the people in the movie were themselves without any show.
And note that it is not easy to make a tragicomedy film because it's difficult to find a equilibrium between comedy and dram.