@info44722
https://support.wix.com/en/article/about-datasets-6368396
So you have created your dataset and added it to your page.
https://support.wix.com/en/article/adding-and-setting-up-a-dataset
Then you need to connect it to your repeater.
https://support.wix.com/en/article/connecting-page-elements-to-a-dataset
As you don’t mention which block of code that you are actually using, then note that on Yisrael’s later post about shuffling the repeater, that he does state that you need to disconnect the dataset from the repeater.
I didn’t understand that you were trying to shuffle the results - I thought you were just trying to randomize what would be displayed.
To shuffle, you will need to disconnect the Repeater from the dataset, and add some code which will query the collection and shuffle the returned array of items.