The general steps that you need to follow to be sure about the technical SEO; Sure that you have a good responsive and high-speed website for the mobile versions. Be sure about your website is high-speed enough to provide a very good user experience. Obtain a sitemap that contains all the URLs of your website that you want to index and rank in the search engines. Have a robots.txt file that allows or blocks the specific search engine bots. Include the sitemap URL inside the robots.txt file. Do not overly crawl your website all the tags, categories, etc. that are not important o rank in the search results. Use "noindex" meta tags or X-Robots Tags to prevent these pages are crawled. This will reduce the crawling costs of the websites. Use Google Search Console to generally take care of the indexing and crawling status of the web pages.