How can I take turns using the pictures I selected (Huawei)?

I have read some of your tips. But for me, when I swipe upwards it is not written like this, there are only pictures. And now I don't know how they alternate through the pictures. I do not know which picture in the row. I have a picture that looks like the gallery but I only see my pictures and in the folder where the pictures were inside I solved the right ones and the wrong ones and took a picture in the meantime and now wants all the background in the right folder I can't get the one picture away. Can someone help me please? Would be very nice.

What do you want to do with the pictures, I didn't quite understand it… Sry

All lock screen background take so that they alternate all background and that was in the beginning with other pictures