There’s something more frustrating than the characters not knowing what they’re doing. In many parts we don’t get to see what happened. The whole movie seems to be from the perspective of one version of Aaron who wasn’t even there most of the time(?) And some parts that he did experience are glanced over so you can’t say for sure if there is a plot hole or not. The part where he finds himself going back twice in the same place is kinda weird but can probably be explained with the information we have.