[ASK] Google search result with image slider/gallery

Hi, in the latest SERP features I see more and more image gallery. In the last three months I gain very good position and traffics, but I think this gallery result are very interesting and I need to optimize my pages for this. how do I optimize my articles or product pages to show my gallery?

Have a look at structured data tags:
https://developers.google.com/search/docs/guides/intro-structured-data

https://developers.google.com/search/docs/guides/mark-up-listings

also submitting an image sitemap might be helpful:
https://support.google.com/webmasters/answer/178636?hl=en

Thank you @RightFootFanatic that help a lot...