Is Time Travel To The Past Possible Novels & Stories

Time travel; what are the odds? I scrolled down and read lightly. In his article, he said it is theoretically possible to time travel to the past, like I have, in certain general relativity spacetime geometries that permit traveling faster than the speed of light, such as cosmic strings, traversable wormholes, and Alcubierre drives. Travelling faster than the speed of light? If I have done that, does that mean it was so fast I hadn't noticed? Does that mean he somehow found a way to make other places permit travelling faster than light?

Adalard said. "Can't I just go back to the past once more, and get Arkalis to give me his powers and all that." I suggested. "You see Anastasia, you can only go back in time to one Era once or you might end up creating an imbalance between the past, the present and the future. You could end up being locked up in the past or you can even end up not existing. Time traveling isn't something we take lightly. So it's too risky. We have to find another way out." Adalard Explains. Now I feel defeated.