Chapter 88 - Rick and Morty question?

Do you know why I don't understand about Rick and Morty is why Rick don't just go back in time until the pause time when you you know back in time scan his lover mine or you some nonsensical magic you take her soul just before she died.... You know what never mind I just remembered why he can't do that the whole erasing her through all timelines situation so even if he does go back in time and scan her brain are so and put into a new body for him because in all points of time she doesn't exist only the effects caused by her exist unless that doesn't work then any more like a all the way up to that point of time she exists which then that idea can work like I get about how Rick dot process when it comes to the hole time nonsense come from way too complex even for him or repetitive but it can work in theory and in case you're wondering why I think about this is it's because that episode where Rick goes to get pizza and the sentence about how he didn't make it like time even though he claimed he went to a alternate world where they're no concept of days off even though it's from a whole different universe one that won't even affect him in theory which remind me after the whole reasoning why Rick don't do such a thing to begin with even if it is from a whole separate timeline