Four H1 tags — Google cannot tell what the page is about
Captured H1s: "Lumina", "Services", "Contact Us", "Lumina" again.
What an H1 tag is
Every web page has invisible labels that tell search engines how the page is organised. The most important is the H1 — the headline. It is the one line that says "this page is about this." A page should have exactly one, the same way a newspaper article has one headline and then sub-headings underneath.
Your homepage has four, and two of them are the same word. So the page tells Google it is about "Lumina", then about "Services", then about "Contact Us", then about "Lumina" again. None of those say medical spa in Midtown Manhattan — which is the thing you actually want to be found for.
Imagine a book with four different titles printed on the cover, and none of them mentions the subject. A librarian would not know which shelf to put it on. That is Google's exact problem here.
What it costs
Your homepage — the strongest page you own — is not competing for any commercial search term at all. It is competing for the word "Lumina", which you already win by default and which nobody searches when they are looking for a facial.
Fixed by
One H1: "Medical-grade skin care on Madison Avenue," supported by a proper H2/H3 structure underneath. Every treatment gets its own page with its own single, specific H1.