SEO for German WIX Website

I am looking for someone who can do some SEO for my Website. The Website is built with WIX and the entire content is in german. Right now the Website won't show up on the first page of Google search results when entering certain keywords. The goal of this project is to rank it on the first page. The content is "Bitcoin education" and the peer group is german speakers only. I tried to add structured data so the crawler can index the website better, but it was not very successful. I can provide a list of keywords in german if necessary. Google Ad Words is not an option for this project, since Google won't allow Bitcoin related ads.