Optimizing your WordPress site without plugins may seem like a daunting task, but it's actually easier than you think! First, make sure your site is using a fast and reliable hosting service. Slow loading times can negatively impact your SEO rankings. Next, optimize your images by compressing them and using descriptive file names. This will help search engines understand the content of your site. Additionally, use descriptive and keyword-rich titles and meta descriptions for your pages and posts. This will help search engines understand the purpose of your content and improve your rankings. Finally, make sure your site is mobile-friendly and has a clear and easy-to-use navigation menu. By following these steps, you can optimize your WordPress site without plugins and improve your SEO rankings!