Hi @DiddyDiane, hope you're doing well. Please check out this FAQ for guidance on moving files from your device to your SD card: https://www.samsung.com/uk/support/mobile-devices/how-do-i-move-music-images-videos-and-other-media-...
Hope this helps!
Thank you, AsadM. I used to use samsung mobile manager tool to help me move my photos from memory to SD card on Samsung phone. I will try the way you shared next time.