I am from the Harry Potter generation, I grew up with the books and the movies so there's no denying that I am a massive fan of the saga, so when the first news of prequels came out I was as you might imagine expectant!
I thoroughly enjoyed the first movie, sure it lacks the originality and the magic of the original Potter films but it had one thing I really liked: it didn't force itself to be a part of the former stories while still being engaging and clearly happening in the same "Universe".
This changed a bit when the second movie came around, Crimes of Grindelwald made a clear shift on the story and started to force itself in the "Harry Potter" timeline by navigating through the past of some of the beloved characters present in the original movies.
And now the third.. where things just simply go sideways, not only it tries to explore even further Dumbledore's past, but fails miserably on doing so. There are a lot of points in the story that simply make no sense at all, the most annoying being the fact that most characters on screen have absolutely no influence on the plot, they are extras in their own film. Grindelwald "rise to power" is so forced, senseless and so generic to the point of being cringe..
It almost doesn't feel like a Wizarding World movie, the only reason I won't rate it lower is the creatures are indeed a great addition and being able to see Hogwarts always brings good memories, but that's about it in terms of positive aspects.
The Credence plot is pointless after two movies developing it, the climax of the story feels empty after 140 minutes of waiting, the magic these days is used as generic fantasy movie would depict it with complete disregard of the "Potter rules", people throwing spells here and there without pronouncing them and us (the audience) not understanding what actually is going on.. They took the magic out and inserted the desire for money, it's sad for Potter fans around the world.