Unbreakable is one of my favorite movies and Glass is high up there. Unfornately this one isn't even close to as good as those two. I don't hate it and I think the characters are good, but both the story and it's presentation were really poorly done in my opinion.
I do think it's worth checking out and forming your own opinion over if you liked the first two movies. There is at least something in it for you if you like the first two.