How do I convince google that my homepage is valid?

Site URL: https://www.alexengelsfitness.com/

Hello, 

I added my sitemap to google console and it was processed succesfully,  but it says there is only 1 valid URL, and 8 excluded. The excluded URLs obviously don't show up in search results. I think google considers them to be duplicates (?), since there is some duplication of content between pages 

The 1 valid URL is actually the least important one: https://www.alexengelsfitness.com/gyms

How do I tell google that the other 8 pages, or at least my home page, are canonical?

Thank you!

Hi,

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