How to query pages with certain tags using the live query builder

I just want to know how to filter pages with specific tags using the build-in live query builder. I selected “pages”, then “tags”, then I typed the tag I wanted to type in but then nothing happened. When I press the enter key the interface remained the same

Unsure if this helps, as I’m new to this and finding my way, but I can find pages with specific tags by leaving it on blocks and selecting page reference and then typing the tag (no # in front).