Artemis v1

Even though you had gone into the past, you likely did not get Apollo because if you stopped or killed him before the events that you witnessed prior, it could rip a plot hole into the universe. Hopefully not a large one. The universe does two important things; hooks up history, which is why you'll quite commonly find that you come across events related to other events you've seen or heard of before, and it also tries its best to stop plot holes from ripping through.