Automatically include watermark on photos

The project consists of finding a way to include a watermark in bulk.
To move photos from an old store (https://www.lulukabaraka.com/) to a new one. There are many products.

I leave two examples. The one that indicates "a" is the current one, the "b" is how it should look like. Link: https://drive.google.com/drive/folders/1Rc-f9XZeM_v-9BKQW4pvEQIATCIoJXHn

Thanks and best regards.