Google loves content.
Not just any old piece. Content that fulfills user’s intent have the best chance to rank highest in search results.
Backlinks are best for SEO.
More backlinks from reputable sites pointing to yours tell Google you’re the “expert”, which means you can give you higher rankings.
You don’t know until an audit.
Ensuring that your site is up to date and error-free from potential issues helps prevent Google from penalizing your site.