I was a John Connor for longest times too. Even became a world leader, got taught that I have to become king one day and shutdown skynet, bring peace to this world. Fought a complete World War 2, lived it in a future world that does not exist here. Then died completing the loop bringing skynet to the world. Only to become Sarah again. So we have to take a full WW2 or a future war, experience, lose weight water, not live without someone, not have someone, anymore, only then R came to being, and skynet exists somewhere, where we don’t go. We only take R, for everything now, and don’t meet skynet, call it a memory, even a false memory. It didn’t happen, never existed.