Sorry for the trouble, I am not arrogant at all in my reply, I was just got confused. I don’t understand where do you find arrogance there. You can see the screenshot below.
So please follow the following steps to fix the issue:
Please edit the pages where you want to put the caption=> After that please click the image and you can see the edit and cancelled options above the image=> Then click in the edit option and you can see the caption this image in the below of every images, we have kept one caption to you for the example after you put the caption then click in the update gallery as well as update your page.