It’s been a really long time since I used Google Sites, so perhaps a lot has changed, but from what I remember, they provide an “embed” utility that only asks for a URL - then Google Sites turns the URL you passed into an embedded version fo the site.
If you put the “Embed this view…” html inside that “embed” utility in Google Sites, nothing will happen, because the “embed” utility is expecting a URL, not html.
And if you give the “embed” utility a URL, it has to be a “share” URL:
But this “share” view will not be editable - it is read-only. I’m guessing that’s what you mean by
You cannot embed an editable version of an Airtable base/view into another site – embedded
<iframe> components are not equipped to handle the security features of a login-protected web application, and would present a significant security issue.
So, if I understand correctly that you are trying to embed an editable Airtable view into a Google Site, unfortunately the simple answer is, “You can’t”.