It could have been a great movie in the hands of a good director. Because the subject is interesting. There is not 2 meters between life and death and you are sinking right before your eyes. There is nothing to press and get strength from.
But unfortunately the movie could not use this situation. It could have added more scary elements and given more humane reactions. Here we mostly watched the accounting of the couple who were about to break up. The reason for running into the swamp was also very absurd. Also, this swamp was not pulling in. That is also interesting. I have lost one of my legs in the swamp while running through high grass once in my life. It pulled in seconds like a bottomless pit. Thank God my other foot and hands were on solid ground. That is why the movie is quite far from convincing. The acting is also very amateur.
There is no sexuality or nudity in the movie.