Gatsby Jamstack SEO

Can anyone tell me how to edit the seo text description in this website.
I’m not able to change the seo of this website after lots of try.

here is website link =
main repo = GitHub - stackrole/gatsby-starter-foundation: A starter to launch your blazing fast personal website and a blog, Built with Gatsby and Netlify CMS. Made with ❤ by Stackrole

Thank you for your help

Hi @Maxen,

Thanks for reaching out!

Have you seen the docs here:

If you continue to have issues, could you clarify what you’ve tried?