Why doesn't Google show descriptions of prescriptions?

Question

Search Engine Optimization

Hello, the essence of the question:
On the self-written site www.adelaidehillsmedicalcentre.com.au, instead of the prescribed description in Google, it sees a different text from the page. What could be the problem?

Answer 1

Everything is correct it gives

Answer 2

Google itself decides what and how to show in the search results, I have this too