Not worse than the first one.
I didn't care for either tbh. To me the "dark" angle on Harry Potter completely misses the point of Harry Potter (and that includes some of the original series).
Yeah, both Fantastic movies were pretty mediocre clichés to watch. The later part of the series of HP is about how to deal with death, it was written when JK was going through depression. Its kind of an under the radar dark series lol. Maybe the movies took it too far with the edge, being "dark" is absolutely in line with the series though.
Grown man spends years trying to kill a child. Grown man has soul split up 7 times. A teacher torturing students. A student trying to date rape another student. Guardians abusing a foster child. Actually a lot of adults trying to kill kids when you think about it. Its some heavy stuff when you strip away the magic elements.