Adding image title attribute in Carousel

Would like to add the title attribute to images of carousel client.
WP images do not have the title attribute unless they are inserted into a post.

<div class="crsl-wrap" style="width: 2977px; margin-left: -229px;">
<li class="crsl-item crsl-active" style="position: relative; float: left; overflow: hidden; height: auto; width: 209px; margin-right: 20px;"><a href="https://1seguros.mx/portfolio/allianz/"><img src="https://1seguros.mx/wp-content/uploads/2014/10/allianz_150.jpg?cef8d8" alt="Allianz" data-title="Optional Caption Here" "Tittle attribute here" ></a></li>

I want to put title attributte = alt attribute in each of the images.