Are the URLs being served with a “noindex” header? Blocking crawls with robots.txt cannot de-list items from Google or other search engines.

> Warning: Don't use a robots.txt file as a means to hide your web pages from Google search results. If other pages point to your page with descriptive text, Google could still index the URL without visiting the page. If you want to block your page from search results, use another method such as password protection or noindex.

From https://developers.google.com/search/docs/advanced/robots/in...