Main Reason it didn't do well was because DVD quality print released illegally a day after movies Premiere all over Internet.

Rating: 7/10 (27 January 2018)

I am sure most of you have seen the Korean subtitled DVD quality Pirated version with even the clips from the same print all over Youtube for many weeks now. Now usually when a big movie is released the pirated versions that are released online are bad quality usually recorded by camcorders etc. but this was illegally released clean quality which shouldn't have been out till February or March. So most people didn't have reason to go cinema when they could watch good quality print Online. How or who managed to do it is anybody's guess because it is something unheard of this is 1st time I saw a clean pirated print of a Blockbuster 2 days after its premiere released on internet.
As for actual movie not really that bad it started beautifully, aftermath of Superman's death, his return and his whole presentation was awesome totally something to geek about probably my favorite part of movie. Aquaman was awesome maybe the best casting choice of all Characters, Jason Mamoa looked totally kickass, truly like Kingof Oceans should along with Amber Heard as beautiful Mera, would love to see their own movie. Flash and Cyborg did the Job nothing much to write home about but nothing negative either. Now Amazons and Wonderwoman , though all other Amazons looked awesome in cosmetic sense the way one would visualize I didn't understand why Hipolyta had a Russian accent. Gal Gadot has gained some weight to look more the part and she acted really well but here I do agree with most critics she was too skinny for the even the her exotic looks fits the role.
But still the worst part of the movie was Steppenwolf not the character itself but because it was made completely out using CGI, when they should have used only Partial CGI. Now it is understandable CGI is required to present an Imposing God Like being but they should have used partial CGI like Marvel did with Thanos because of which Steppenwolf ended up being worst part of the movie, it made the movie look cheesy and cheaply made. I sure hope they don't make same mistake with Darkseid in upcoming sequel. Anyway for actual geeks and fans its still worth a watch at least once no matter what whiners say, who probably watched the moved online.