"Help! My Content Gets Indexed, Then De-Indexed by Google and Bing"
Briefly

Website indexing issues can stem from several factors, including technical errors, content quality, and compliance with SEO best practices. Regularly check Google Search Console for errors and make necessary corrections.
If your content is being consistently de-indexed, evaluate your site's overall health: ensure it meets Google's quality guidelines, doesn't have penalties, and maintains a solid backlink structure.
Read at SitePoint Forums | Web Development & Design Community
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