How do I add photo captions on my Galaxy Samsung s8?

cazs

I've taken lots of holiday photos but I'm going to start forgetting which photo was taken there so want to add a caption to each one which shows up when I swipe onto the photo. I can't seem to figure out how.
There is an option to add a Tag somewhere but when I tried that, the tag didn't show up as a caption on the photo.
Advice welcome.
Thanks

PHK

In the Gallery, if you click the Stories tab, you'll see that the phone has automatically grouped together photos taken at the same place/time.

If you manually want to do that (or change the Stories it's auto created) then tap the three dots in the top right corner and tap Create.

You can also use Search to search for photos taken in a particular area.

Alternatively, Google photos will also, automatically group your photos according to place and time.