https://shrani.si/f/1K/IB/2gZqsLFj/pe.jpg
The screenshot shows that the search critera included the term velenje
which means Google scans the index for that exact phrase. Google uses the search term to highlight information in search results which is why the description is different than what you entered into the plugin.
In this case, the search term is not in the meta description you wrote so Google uses content from the page to create a custom description.
Due to this being handled on Google’s end, there is little you can do to force Google to display the preferred description. The best advice I can provide, unfortunately, is to try a different description. This article provides advice on creating the right description for your site.