Dumbledore movie vs dumbledore book

So I only just started the books, but it seems so far when ever I read snippets of the later books dumbledore in the book sounds way different. I guess I’ll have to wait and see, but I feel like in the books he sounds more calculating or meaner? 🤔 and like unstoppable and something voldemort is afraid of but I didn’t get that as much from the films.

But I’m not sure cause so far in the first book he’s pretty much the same. I’m just thinking more like order of the pheonix and beyond. so I guess I’ll just have to wait and find out I almost don’t want to finish reading the books cause then I’ll have read them and you can only read something the first time once 😂 but I’m looking forward to finding out more stuff.