Hello,

You can change the portfolio title, you can put information media caption, and get data by post id and put it in the image title attribute.

wp_get_attachment_caption()

https://developer.wordpress.org/reference/functions/wp_get_attachment_caption/

check: https://prnt.sc/mCLO4tSwq_9N

File Name:  portfolio_listing_1_ajax.php

File Path: \themes\myintro\dz-inc\elementor\ajax

Thanks