Can you think of any movies/tv shows/anime that depict a protagonist struggling with amnesia-like symptoms after being involved in time travel?

I am struggling a bit to word the question so I'll explain my thought process a bit.

I was thinking about Back to the Future style time travel where someone goes back in time, makes alterations to the past, and returns to a different life around the time they left but without actually acquiring the memories of their new life. Most of the time this happens at the end of the movie or series and they're depicted only slightly confused but the viewer is given the impression they'll integrate just fine. I'm wondering what's out there for media where the conclusion of the protagonist's adventures with time travel is just the beginning and the protagonist now has to struggle to make sense of everything.

Even with the short time loop/do-over premise that's in movies like Palm Springs, Groundhog Day, and Omni Loop I feel like it could be difficult to interact with people afterwards. I imagine knowing everything about someone and having them regard you as a stranger would be frustrating and overwhelming.

From what I've seen the premise seems a bit under explored.