Overall, it was fun, cute, and a pretty good successor / sequel to wrap up the series. Although right at the end, after the credits, there was a hint that more movies were to come. I hope not. lol
The acting was fine, the story was okay, and the message was generally positive - that memories can help overcome grief and that family connections are of utter importance.
There were a few stupid, woke Hollywood remarks, though, sprinkled in, like "science is absolute." I laughed out loud at that one. On the other hand, the pernicious nature of the ghosts point to their true origin: the bowls of hell. So they got that right.
So if you are a casual Ghostbusters fan like I am, I'd give this a recommend. Rent it or wait till it's free on streaming. It definitely wasn't a bust. ;)