Salazar Slytherin saves his descendants in another universe. If he wanted to solve the end of Tom Riddle's destiny, he would solve it from the source - throw Harry Potter to him before he made a mistake. Salazar believed that the opponent of fate would make him unable to do anything.
Harry believes that the mysterious power brought him to this era to allow him to prevent all tragedies - people are mortal, and Voldemort needs a little help from the savior (laughs)
Intention: People are doing it, God is watching