There’s a game around time travel called Quantum Break that brings up this topic.

Someone brings detailed messages to their past self…and acknowledges, as a way of proving it, that September 11 is going to happen - but due to the way time works, no matter who they warn or what they say, no one will believe them and nothing will change.

I don’t even know if everyone read that bit of text lore ingame, but it was pretty emotional.