Issue with Image Display on Mobile Devices

am reaching out regarding an issue I have encountered with your plugin. When images are displayed on mobile devices, they appear blurry, significantly impacting the visual quality on my website.

As an example, you can view this page: Construction Plot 44 ares – Mislodjin, Obrenovac.

I have attempted to adjust the code, but I have not been able to achieve a satisfactory result. I would greatly appreciate your assistance in resolving this issue or any advice on optimizing image display for mobile devices.

Thank you in advance for your help.

The page I need help with: [log in to see the link]