If by any means you're judging the movie by seeing its rotten tomatoes, let me tell you, you are making a damn mistake. First of all, do know that Rotten Tomatometer is broken.
Mediocre shows like Ms. Marvel get a 96% rating, and genuine good movies like Man of Steel and Black Adam get in 40-50%.
Aside from that, this movie is easily 5/5 for me. It has right amount of action, pacing, comedy, even some of the characters that you might end up liking. Dwayne Johnson is a perfect choice for a character as overpowered as Black Adam and his screen time in the movie just proves that. And for diehard DC fans reading this review, just book the tickets and watch it on your nearest theaters as soon as possible. You all have a treat at the post credits scene.. 😉