Well what to say about these 2 films/ SANS SOLEIL is from 1983, all still photos and commentary on Japan mostly. I turned off after 25 minutes.
They are not MOVIES - they are STILLIES. Still photographs only shown with someone commentating on what they show and how supposedly profound it all it. It was a technique for film-making that did not catch on obviously, Hmm, I wonder why... Maybe because they are mind-numbingly boring?
La Jetee is the earlier film, 1962 and about time travel and nuclear apocalypse. I lasted less than half an hour with this. Supposedly influential, and it may well have been, but GOSH it is dull and boring. The year before the BRILLIANT colour film version of THE TIME MACHINE was made. Watch that instead. Or DAY OF THE TRIFFIDS TV series 1982. Or 28 DAYS LATER. or THE GIRL WITH ALL THE GIFTS, Or SHAUN OF THE DEAD. Something ENTERTAINING. This is not that.
However, both these films may well be great sures for insomnia and can be used instead of sleeping pills, so...
These are 2 very VERY pretentious and monotonous arty self-indulgent French films - the sort of thing I would have watched in the late 80s when I was arty and had aspirations to be arty and go to arty college and act arty. I grew out of it, thankfully.
If watching a series of photographs being lectured in mind-numbing dull and pretentious French with obscure references and supposedly profound pronouncements is your thing, fine - you'll love it. Just like up a Gitane, stare into the middle distance, pontificate about the futility of existence and do a Gallic shrug, and you'll be fine.
Not for me.