While Yoast SEO plugin will help your SEO (Search Engine Optimization) by guiding and suggesting things, you will need to make an effort yourself. This includes learning who your audience is and what keywords they use to search for what you offer.
In her article, Don’t Just Set it and Forget it, Marieke van de Rakt says:
SEO is a lot of work. Yoast SEO magically takes care of most of the technical SEO stuff. The content side of SEO is a different story though. You’ll need to make an effort to set up a successful content SEO strategy.
Some of the things you need to do yourself are:
- Configure Yoast SEO properly
- Do keyword research
- Write awesome content
- Link internally (within your site)
- Have a social media strategy
- Know your competition
You can read the specifics and see what you can do to improve your SEO.