Using the Combo Blocks plugin, you can easily query posts order by randomly for Post Grid or Post Grid – Filterable Gutenberg blocks.
To begin, insert the “Post Grid” or “Post Grid – Filterable” block.
From the List View make sure you’ve selected Post Query nested block. This selection is important to access all the available block settings for “Post Query”.
Now under Query Post => Add Query Params select the Orderby option.
Now from the Orderby dropdown select the Random option.
That’s how you can query posts order by randomly for “Post Grid” or “Post Grid – Filterable” Gutenberg block. If you still need help, please create a support ticket on our forum.