How to make Wix Pro Gallery thumbnails scrollable? And how to make thumbnails non square?

Question:
Hi, I am using Wix Pro Gallery (the layout with row of thumbnails below selected video) to display videos. I have more videos than fit in the horizontal row of thumbnails below the selected video. Is there a way to make those thumbnails scrollable if the thumbnails don’t fit in one row?

Related - I am trying to make the thumbnails appear in the aspect ratio of the original full size thumbnail. They are 16:9. In layout settings → customize layout I chose under Thumbnail Resize the “Fit” option, which in theory makes thumbnails have ratio of original image. But no matter what I choose there the thumbnails are always square.

Ideas on how to get this gallery behaving more logically?

thanks

Product:
[Which editor or feature is your question most relevant to? e.g. Wix Editor, Wix Studio Editor, Editor X.]

What are you trying to achieve:
[Explain the details of what you are trying to achieve. The more details you provide, the easier it is to understand what you need.]
I want thumbnails not appearing as square ratio and I would like the thumbnails in a horizontal row to be scrollable.

What have you already tried:
[Share resources, forum topics, articles, or tutorials you’ve already used to try and answer your question.]
I have tried seeing if the Gallery settings have options to achieve what I am after, but there is nothing.

Additional information:
[Include any other pertinent details or information that might be helpful for people to know when trying to answer your question.]