Hello, mmgldemir, & welcome.
Posts and static pages are too entirely (and somewhat contradictory) post types. Static pages are those that don’t change much over time. A posts page is designed to change over time, because it includes your posts.
Static pages are for things like a contact page, and about us page, etc. You may (or may not) want a static home page, and, given the nature of your site, you probably do.
Your posts page should contain only a title. You can just call it blog, or you can be more creative, using something like “Ahoy, Matey!” since it appears to be a boating site. When you want to create a new post, just go to ‘Posts > Add New’ and begin typing.
I hope this gives you a bit better understanding about the types of pages and their uses, but feel free to ask more questions if you have them.
If it resolves your problem, then please mark the topic as resolved.
Good luck and much success w/your site.
