Why Do We Always Fail When We Can Obviously Change Time and Space?

"Time Traveler - You can obviously change time and space, but why do you always fail?" "Tonight's universe has the vastness of oblivion and the precision of feverishness." ——This sentence was a suicide note written by Shi Bubai himself before he was promoted to god. He only knows that all his attempts to "change time and space" will fail. The Time and Space Administration said he was a "waste during the internship period", and the deputy director said to his face that he was "a drag"; "He will die in the paradox of his own cause and effect when he should succeed most." Only Shi Qingfeng, the master of time and space, looked at him in silence for a long time and said: "The 'personality cutting' wound on your body is not your past - it is your future." Shi Bubai was confused. Until late that night, he dreamed of a person exactly like himself, covered in blood, standing at the end of the cause and effect of destruction, reaching out to him: "Don't regret throwing me out. I will die for you and you will live for me." When he woke up the next day, there was a crack on the back of his hand that he had never seen before. In the cracks were words he had never seen before: "The 33550336th reincarnation starts."