TLDR: Optimize your WordPress robots.txt file for better SEO by editing rules to control search engine crawling. Learn to locate and edit the file, understand user agents and rules (Disallow, Allow, Crawl Delay, and Sitemap), and use Yoast SEO or manually create/edit the file. Essential to prioritize important pages, avoid blocking them, and consider best practices like adding sitemaps and keeping rules simple. Test changes using Google Search Console for errors and warnings.
https://wplift.com/how-to-optimize-your-wordpress-robots-txt-like-an-expert/