Ideas for chiropractor with 2 locations in big city

Hello Friends of SEO,

I am an absolute beginner and wanted to ask for some ideas for the website of a friend. I built the website with Wordpress and already installed some plugins and did some Onpage SEO. What would you suggest to get more traffic in a big European city? What would be the next step? We offer a niche (special massage). How can we use that? I am open for any ideas. I can give more details about the website via DM. Thank you in advance.