Before you all TL;DR this post, I recommend Potterless podcast which begins as a guy reads Harry Potter for the first time at 25, it’s pretty funny and takes a lightly critical look at a lot of this.
From what’s shown in the books, you work for the Ministry of Magic, Hogwarts, Gringots or have your own business in Diagon Alley, Nocturne Ally or Hogsmead. It’s inferable that you can also work at other wizarding schools, professional Quidditch teams, or other governments. The Night Bus is probably also government run, but I don’t think it’s clear.
I feel like Book 1 was ok as a self-contained story. Book 2 is where it falls off the rails and while a skeleton of a plot holds the series together, most of it is lazy trash with a few good paragraphs. Of course if you’re a young child inspired by the books you can draw out a lot more meaning than I think was intentionally put in.
The books take place in the early to mid 90s. Where cell phones were not common or covering as much area. Also, wizards are comically inept with technology. (Except when they’re not? The telephone booth entrances to the Ministry imply someone had/has knowledge of some things.)
As I recall, some locks can’t be opened with the charm, Hermione fails on a couple locks, and Harry can’t open the fake locket either.
I think that using Goblins who speak Gobledygook for bankers, is much more obvious as a stereotype, and I don’t personally have the same linkages with gnomes. (D&D, World of Warcraft, David the Gnome)
It’s not said directly, but assumed that Voldemort’s killing curse bounced off Baby Harry and hit Voldemort, destroying his body. Which is why he suddenly disappeared that night.
They were busy with Grindelwald, who was Voldemort of the previous generation. A summertime friend(and possible lover) of Dumbledore. Who eventually lost a duel to Dumbledore and was locked away in his own fortress. Voldemort makes a visit late in the books.
Well, it’s not mentioned much, and no details, but there is Hermione’s parents.
How about no stoppage of play when Harry’s arm gets broken? At least until a later book when another team calls a time-out. Not to mention how would a time out work with 3 magically moving balls? Or no net or spells to catch a player falling off their broom, as Harry does. Or that Griffindor loses because Harry passed out and they can’t have a substitute? Until the next book when Slytherin brings in a whole different team for a match. Or when Ron was keeper and doing so bad Harry was considering replacing him with the runner-up in the team tryouts. Or that at Hogwarts apparently there’s only a single games against each house, and maybe a final? Or that catching the Snitch is the only way to end the game. (Not win, since From in the World Cup catches the Snitch but his team still looses.)