How to add photos and videos on iPod Nano 7th gen without itunes?

Howdy, I have an iPod nano 7th gen that I still use. I have not found a guide on how to add photos and videos now that iTunes is gone.

I have used other guides to back up the music after revealing hidden folders, but am not the most tech literate, so I cannot use these guides to reverse engineer a solution.

I know its not a file formatting issue, I thought to check that at least.