How to have Goolge indexing the right pages?

Hi,
I just installed Enfold on a new domain, downloaded the Dummy Data, then created 9 pages and erased all the others from the Dummy Data.
If I search on Google for barcelonasitgesterrace.com I get all the pages listed (68!) and not just the 9 pages that are currently there. Besides, and that’s the most important thing, the meta description doesn’t appear.
If you do a search on Goolge, you’ll see what I mean.
How do I get Google to show for example the Homepage with its appropriate meta description, which I already created with Yoast SEO?
Do I have to re create a xml sitemap and send it over to Google? I guess Yoast did that upon installation and before I erased the Dummy Data, which may explain why I get the wrong search results?

Thanks!

Antonio