No good will come of this.
CW: flashing images and fast cuts
This is unusual in being science fiction with a heavy emphasis on the believable over action.
Space is hard, lonely and dangerous and Jupiter is _years_ from Earth with any reasonable short term extrapolation from what we can achieve now. It's swimming in a very small pond of movies that bother to take these things as givens.
It takes the form of an "after action report" that looks partly like a documentary but is essentially a found footage movie with a mix of surveillance footage and "if you were there" scenes.
It's great at showing the danger, stress and boredom in claustrophobic close quarters before getting to the landing and tragic events that the portentous narration has foreshadowed is coming.
Even at this point they still keep the commitment to this being grounded with talk of how a 100m walk really is something very dangerous they perhaps shouldn't attempt.
It's not flashy but recommended 7/10.