what was the reason for Harry Potter series coming back ?

Exactly 3 years ago Harry Potter series in HBO was announced,and like a teenage Harry Potter fan girl I was way too much excited (I am a guy)
But then I realised that there were so many things that the movies didn’t get ,like the Hogwarts naughty peeves ,who were the servants and often cooked good at the Hogwarts ,thier existence was not even mentioned ever ,they were completely eradicated.also the house helper hockey and her connection with Dobby the house elf ,she was the main character in one of the books who was killed by voldmort ,young marvolo riddle ,when he made the huffelpuff cup a horcrux ,and she was sacrificed .Then our honrable Weasley ,Percy Weasley who studied in Romania 🇷🇴,he was only mentioned during the goblet of fire movie , when they were in jungle and hagrid mentioned this to Harry ,but that’s a different story ,Blud was not even considered by jk Rowling ,one more incident which takes places in books was when bill Weasley’s own pen pal friend invited him to a student exchange program to castleobruxo ( a magical school like Hogwarts situated in Brazil deep in the Amazon forest ) .he called bill Weasley but he rejected and the Weasley family rejected because they couldn’t afford that money at that time , and when the friend got to know about this ,he sent a magical spell to bill ‘ s home , he made his ears hanged up for a long time . Another story is when they made snape look like a bullied victim but in the reality was that snakes always peeped in and stalked the marauders ( James , Sirius , Remus , and Peter ) he kept on stalking them , always waking behind them and creeping them , after exams he kept following them to ask about their exams , and constantly irritated them no matter what and always tried to impress lily potter , ( Harry’s mother and James wife ) later to impress her he made himself isolated and when he joined the dark gang ( death eaters ) Lilly told him to stop and leave them , they were not a a good company , he told Lilly to step away and get lost and then later called her ‘ Mudblood ‘ . That was one of the last times that Lilly and snape spoke to each other .