As we can see, the image you used is only 380x300px and that's why does not fit to frame. If you want to increase images sizes for some items/places, you need to play with functions/theme-functions.php file where all sizes are defined.
Under functions/theme-functions.php file as we wrote above. It's add_image_size(). What you ask for, requires files customization what in reference to Item Support Policy is not allowed. So if you want to modify files and don't know how, you should contact with your web developer.
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Thanks for understanding!