[Plugin: oQey Gallery] Change default alt tag labeling

I see that your plug-in generates the following default alt tag text per image:

<img src="https://www.mysite.com/wp-content/oqey_gallery/galleries/katherine/galimg/01blog_untitled-1.jpg" alt="oQey Photo Gallery Plugin for WordPress - 01blog_Untitled-1" width="928" style="margin-top:3px;"/>

Where can I adjust this default tag as having the basically exact same alt tag description on every image is bad for SEO.

Is it just this line:

function oQeycrawlerFood($t){
$t = str_replace("oqeyimg", "oQey Photo Gallery Plugin for WordPress -", urldecode($t) );
$t = $t."<p align='center'><a href='https://oqeysites.com'>oQey Photo Gallery Plugin for WordPress</a></p>";
return $t;
}

In gallcore.php????

https://www.ads-software.com/extend/plugins/oqey-gallery/

[Please post code snippets between backticks or use the code button.]