I am using WordPress and looking for a plugin or code through which I am able to open a different image in the lightbox. For example, I have images in the thumbnail when clicking on that thumbnail another image should be open in the lightbox. I want to open another image in the lightbox rather than thumbnail image
Yes, It's possible. You can try this simple step from the divi.
-> Firstly, install and activate the Divi Supreme plugin.
-> Go to Divi Builder and look for Supreme Image Module.
-> Under Link, Toggle “Open in Lightbox” and a new option “Use Other Lightbox Image” will show up then toggle “YES”.
-> Upload your desired image for the lightbox.
-> Save and Publish!