For Predator I feel like you could "Rogue One" that with the surviving team making it out only to have them all die in the end. Though I'd be interested in an Alien or Predator movie regardless where the title monster won or at least a stalemate.
Though I've had this image of a Predator movie ending kind of like in the Assassins Creed games where one of the protagonists catch up to the bad guy and they just share a moment before the bad guy dies. Though in this case a battered Predator catching up to our hero and only granting the Predator a hollow victory.