First thing first is future me would not come back to present me because future me know that it would cause a rip in the time space continuium. What would happen is future me would go back to present me so that means present me knows that I will time travel in the future. So when present me turns into older me I would time travel back to youger me and the cycle will start all over again. So future me knows that time travel is very dangerous and future me would never do it. so did you understand all that. discus it in the comments down below. And remember to like and subsrcibe.