Embedding a list of post with a particular tag in a page

I am trying to wrap my head around one thing.

I have a website built with blogdown, it includes 5 static pages, all of them markdown files, stored in ./content folder. I use Hugo future imperfect theme.

I would like to embed on one of those pages, after the regular content that is written in markdown, a list of all blog posts (hyperlinks) with a certain tag, related to that page. This of course needs to be updated every time I add a new post with that tag.

How can I do that? I am really lost. Can someone please point me at some basic explanation of how to do that? I understand markdown well, but all that hugo-related stuff is totally new for me.