First, check if there was a Google algorithm update that might have impacted your rankings. Then, analyze your Google Search Console for any penalties, indexing issues, or lost backlinks. Run a site audit (using tools like Ahrefs, SEMrush, or Google PageSpeed Insights) to check for technical issues, slow speed, or broken links. Also, review your competitors—did they improve their content or SEO strategy? Refresh and optimize your content, update outdated info, and ensure you're targeting the right keywords. Lastly, focus on quality backlinks and user engagement to regain your rankings!