How to close a directory containing folders with websites from robots?

Question

htaccess

How to close a directory containing folders with websites from robots?
For example, this is possible through .htaccess - they tell me that Apache reads it, but Apache does not see the directory higher than the sites.
What other ways are there?

Answer 1

put robots.txt in the root of the site
Add after the main parameters, before the sitemap and host (if you have them)
- if you want to individually disable some sites from indexing
Disallow: /projects/site1/
Disallow: /projects/site2/
- if you want all disallow folder to be indexed
Disallow: /projects/
Note the "/" at the end of the line.
If projects have already been indexed, they can be deleted in GSC (Google Search Console)
Google Index -> Remove URLs