Nope to all three.
Dan Trachtenberg clarified in an interview with SFX magazine that this is just Feral's first time on Earth, not the first time any Predator has ever come here:
"I want to specifically say this, because I think there's been some confusion how people have understood: in my mind, this is not a prequel movie, this isn't, 'Let's tell the origin of the Predator.' This is really something that's set prior to the original Predator movie. And the Predator creature in this one, this is its first time travelling to Earth. Who's to say if any Predator at any point has ever been to Earth prior? But for us, this Predator is discovering this planet and looking for who was on top. We use that code to examine the larger themes of the movie."