When We Have Deja Vu

Do you think when we have Deja Vu is when the future version of us nudge us to enact in a certain way for things to happen just how they're supposed to happen some 20 years down the line? Because, they've changed one thing from that moment you're having Deja Vu and it has ruined something/everything in the future and now it has to come back and change that one thing back to how it was to change the courses of future actions?

Or

Do you think when we have Deja Vu is when we shift timelines? Because, I don't think we live in a single dimension. I think multiple dimensions/universes exist and the moment of Deja Vu is when we skip from our current timeline to another one? For better or worse.