I guess that depends on whether you only travel through time (time vs space), or whether you follow the time-line back (aka. travel through time and space, kinda like both you and I are doing right now).

EDIT: there’s also the reference point, and whether you can bring a physical vessel, or have to possess your younger self.

Back to the Future appears to be using a kind of relative spatial reference point, and you bring your body along the ride.

Contrary, Steins Gate (the part shown in the series) uses a body as reference, and has you “possess” said body. Though it hints that Back to the Future-like travel is also possible.

Not sure if I can name any story where time and space are disconnected.