@Catesnova1
Sorry for the late response!
First, please verify that you're copying the image address and not the web address! Using a web address will cause nothing to happen when it tries to load an image. If you're on PC, right-click the image and click Copy image address:

If you're on mobile, press and hold the image then use Share image...

...then enable the link and copy it:

I am not an Apple user, but I figure it will be a similar process as it is on Android/Chrome OS/etc.
Alternatively, for either PC or mobile, you could copy/save the image, upload to an image sharing site (Discord, imgur, etc.) and use that link if you cannot find the original image link. I personally use Discord as it has a feature that lets you directly copy the image link.