This was a let down.
I didn't care for the first movie. The second one surprised me quite a bit, I liked it and thought it showed some promise. This installment was just messy and shows that the minor promise Leone showed in Terrifier 2 was probably a fluke.
I think LaVera in her little costume in Terrifier 2 did some heavy lifting. Also the vagueness of the lore allowed the viewer to develop some interest in where things were going but I think it's clear now that Leone doesn't have a scooby what he's doing with all this.