Maria,
you should install extra extension Google Structured Data (GSD) from tassos.gr (for SPPB you need Pro version, investment). It will help you much more.
What Google displays depends on several factors. Also, keep in mind that even if you make changes today, Google might not reflect them in search results for a week or two. Anyone who works professionally with SEO knows that patience is essential here. As the song says, "Only time will tell."
OG tags (property="og:title" etc.) - are used for Social Media (by Facebook, X etc. ), not for Google Search Results. Also, you are confusing concepts. In your case, you have to focus on GSD (!) Talk with Google SEO expert from your city/country - will tell you more.