How to bring together tiddles of the same tag?

I search on the site, I don’t understand those codes. What should I do?

See https://tiddlywiki.com/#list-tagged-draggable%20Macro:[[list-tagged-draggable%20Macro]]%20[[list-tagged-draggable%20Macro%20(Examples)]]

See my answer here A list containing tiddlers with the same tags as current tiddler? - #7 by TW_Tones since you have asked twice