horizontal gallery crop on mobile

Dear team, On my draft page below, I use in the middle section a horizontal gallery. Below: “Ein paar Dinge, die hier einfach normal sind”:

it looks fine on laptop, but on mobile the pics are cutted top and bottom. on mobile It does not make a difference to set the gallery with a different percentage of height. the image setting is and shall be: no scaling

How can I ensure that the pictures are not cropped on mobile?

Thanks and best regards,
Tilman!