Is it possible for a traveler to appear in this world? If people now travel to the past, how can the past change? How do you know your present knowledge? Does this mean that you have crossed the past and brought modern knowledge? What about modern knowledge? Isn't that time and space disorder? Very contradictory. There are indeed many similar events in history, but there is no fact to prove whether such a thing really exists. So similar news events appear repeatedly in many reported news today, but in the end there is no scientific basis!
There are many time travelers in history, but history is just history. In modern times, there are many news reports of similar events, which are not necessarily true, but many things can't be explained scientifically, so the authenticity of many things can't be doubted. So many unexplained things are left to future generations to solve in the best way, hoping that time travel is true and let us better understand historical events.
Why do you always want to go back? Do you want to repent because you have done a lot of wrong things? Why can't we just go to the future and not go back to the past? You can know what will happen in the future if you can go to the future, but you can't change the present because you can't go back to the past! Suppose the ancients came to modern times and were assimilated by modern people for a long time, and then he returned to his time. Doesn't he behave like a modern man?