Imagine Prometheus combined with The Abyss and set in the H. P. Lovecraft universe of the Cthulhu mythos. Now make it with the budget of a few first year film students' pocket money and also their skill so far and you get Gods of the Deep.
You can't really blame these people, can you? What would you do if you had a dream, but had no idea how to make it happen? You experiment. You try to copy what you know, hoping that some original thought will make an appearance and propel you into your movie celebrity career. It doesn't matter that the actors you can afford can't act or that the sets you can afford are basically a cellar somewhere that you must make look like a submarine. What matters is to put something out there that is not completely crap. And, by the old gods, they succeeded. This is not crap!
On the other hand, it's not much better either. Everything in the film is derivative and the story is really really weak. Hint to future "experiments": first you write it, then you (and as many other people as you can find) read it and only if you like it and they like it do you continue with adapting it into a movie. Because somehow, probably determined by the success of such powerhouses of suck as Marvel, people have got it into their heads that movies and books are different and separate forms of art. No, they are just forms of medium for storytelling. The storytelling IS the art. And unfortunately here, they failed miserably.
And it was almost endearing to see how seriously the film was trying to promote itself because it was starring the famous Rowena Bentley. Only she was not famous. That was pretty funny.
Bottom line: if you consider this the first attempt in a series of incrementally improving projects, then it was a success. Kind of like Elon Musk's first exploding rockets. It promises the possibility of actual film making down the line. If this was their best effort, though... well, it kind of sucked.
