I’ve already give you a list of things in HP that are REAL occultic practices. The way HP portrays them is a Hollywood version - but the practices that underly the hollywood version are real practices.
The wiccans I’ve known have limited their “occultic practices” to lighting candles of various types. Should I avoid candles because of that?
And anyway a lot of your examples of “occultic practices” in Harry Potter have been completely wrong.