[TOMT] Action/family/survival movie with a giant snake animal

I am not sure how should I name that animal cuz it was fiction but it was an enormous thing.

The movie is with a family(with two kids) that are in the forest for some reason and at the beginning of the movie the animal comes from the bottom of the river and swallows a random person that was on a boat. The family is trying to survive the animal (it all takes place in those woods they can’t leave the place) and I remember towards the end of the movie the two kids were stuck in a building and the animal was crawling there and at one point the kids are besides a wall with nowhere to go because the snake found them but instead of killing/eating them) the animal takes a left turn and leaves them alone (it was because the animal was a mother/father as well and it sensed that they were kids and didn’t want to hurt them)

I watched this movie once like 7 to 10 years ago so excuse for the bad explanation lmao