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"...

Code (markup):

How to take second link form a string?

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