File order in Okular?

How do I change the file order in Okular?
When I open a folder containing .jpg files with Okular, they’re not sorted by name.

I’m not sure I get what’s the actual issue. Could you please a screenshot? Thanks!

Say the files are 1.jpg, 2.jpg, 3.jpg - I want them to be in that order when I scroll down. But instead they’re in some other order, like 2 1 3.

It would be helpful if you could provide a screenshot of what you are seeing.