Q: “I like to know it is better to create a page or a post you have that as my focus page. ”
It can be a post or a page. It doesn’t really matter for Google in most cases.
When to choose page over post:
- you have better conversion elements on the page, than you could have on the blog post (to grab emails, display telephone number, etc.)
- your page has better URL architecture (for example site.com/seo/content/writing, where previous pages SEO and Content are also very powerful SEO-wise, it would give higher chances for /seo/content/writing/ to rank higher for the keyword (seo content writing) than if you had a blog post like: site.com/seo-content-writing)
This is really all there is that impacts SEO or usability.