Hello everyone, I am a rookie for SEO. I established a new website. Creating articles on website or create more backlinkes, which one is priority in the beginning?

There are a lot of big word press blogs, but my accounts have always been suspended. Could you tell me the backlinks making rules for WordPress blogs?

Hello guys, I am just a newcomer. I used SEMrush checking the site, it shows 73 errors not claim lang=en. But I have the in the header.html. Is this okay or not?