check with the term. " high domain authority sites for guest blogging"
"Hi PR domain authority sites for guest posting", "Instant guest posting approval sites"
and take the website list, contact them with proof of your previous work.
When a freelance writer wants to publish a certain magazine article, the writer starts researching good magazines that might publish the work.
Contact the editor.
Wait for approval.
Submit your guest post.
Publish your guest post.