https://yoast.com/accidentally-noindexed-a-post-what-to-do/
Help, I've accidentally noindexed a post. What to do? • Yoast
Aug 8, 2023 - Here's what you should do to get traffic and rankings back if you accidentally noindexed a post or page or even a part of your site.
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https://marketingsyrup.com/the-curious-case-of-noindexed-page/
The Curious Case Of a Page Being Noindexed - MarketingSyrup
curious casenoindexed