Like other DC movies that get bad reviews in general but are pretty decent in reality, I was expecting the same from this movie too but God!!! This movie is awfully executed. Lots of things comes to my mind and I'm gonna list those things without any spoilers.
Overall, this story had the potential, the concept was good, old characters were good, First half of the movie was alright but then second half is absolutely meh. CGI is good but the fights feel baseless because the plot is bad and villains are badly written and those lame comedy dialogues ruins everything.