How to take second link form a string?

Ho can I take & keep the 2nd url / link in a string (suppose $myUrl) from the following string?

$myString = '<div class="thumbnail-container animate-lazy" style="padding-bottom:52.533%"><img width="750" height="394" src="https://bbbbb.com/wp-content/themes/jnews/assets/img/jeg-empty.png" class="attachment-jnews-featured-750 size-jnews-featured-750 lazyload wp-post-image" alt="Ron DeSantis & Protesters" data-src="https://bbbbb.com/wp-content/uploads/2020/10/NF-10012020-3-750x394.jpg" data-sizes="auto" data-srcset="https://bbbbb.com/wp-content/uploads/2020/10/NF-10012020-3-750x394.jpg 750w, https://bbbbb.com/wp-content/uploads/2020/10/NF-10012020-3-300x158.jpg 300w, https://bbbbb.com/wp-content/uploads/2020/10/NF-10012020-3-1024x538.jpg 1024w, https://bbbbb.com/wp-content/uploads/2020/10/NF-10012020-3-768x403.jpg 768w, https://bbbbb.com/wp-content/uploads/2020/10/NF-10012020-3-1140x599.jpg 1140w, https://bbbbb.com/wp-content/uploads/2020/10/NF-10012020-3.jpg 1200w" data-expand="700" /></div>';

Code (markup):

 

solved