Reading Harry Potter

Okay. I have to admit. I have read Harry Potter and the Deathly Hallows and I liked it. I read it in English, just to have purpose of reading.. you know.. I have to improve my English knowledge because it's not the best, I say.
It was really nice, exciting and boring at the same time. Not to mention the end of the book.. oh dear.. poor writer.. she didn't know how to make the story more complicate... I could make an easier solution why HP - and spoiler comes, don't read it, if you don't want to know what the end of the book is - so why HP didn't die.. the solution was too much complicate. I don't think that was necessary. And what I missed was: what happened to the others?... they fully diasappeared from the last chapters. At the end Harry tells to his friends Ron and Hermione what happened.. it's one.. I mean ONE sentence. Okay. And what happened to the others? What happened to Neville, Luna, Ginny, Ron and Hermione during the war? They were fighting.. or not.. or waiting.. or jus commited suicide... come on I am interested more in these characters, than to read why Harry didn't die and what person Dumbledore really was. I don't care, to tell the truth. And the epilogue.. oh.. how did it come? Nineteen years later.. okay.. the reader could find out very early that Harry and Ginny will get married.. also Ron and Hermione.. but how did this all mess, that in the Epilogue is, come? Why was everything forbidden to Draco and his family? What happened to Teddy Lupin? Who is that Victorie or Victoria or who? What happened to Luna? (One of my favourite characters) How did Neville became professor? What is the main characters' job now?.. and so on.. SO there are opened questions.. that are not really important, I know.. but I'm interested in.. if I've read the book once... :)