The Time Travell Movie

Time travel in this universe, is that the time line never happened. So why are these terminators still coming back? Where are they coming from? Yas trew, unless they sent ple onte. It's just that they designed it this way so that they could have arnold wort tager in this movie. I feel like what they did to him in this movie is devisive, just like an end game. With hullk some people are thought of like, funny, permanent hulk is cool. And other people were like, what have you done?