ousset Firstly, you put a link of youtube video into a custom HTML module in section-1 position, of course, it will show the link there only. You should take the embedded code of the Youtube video and put it there.
Secondly, it seems that Linkymap extension supports to show the map via the content only as when I tried to test that module with Cassiopeia template, it doesn't show the map either.
You should reach out to the provider of this extension for further investigation.