
1. It can be the type of CMS you use.
2. The errors and notices you come across in the Pages section.
3. Changes made to the robots.txt file.
4. Publishing, deleting, redirecting or changing the status of pages, and so on.
5. DNS errors, which are resolved through the hosting.
6. Server errors, the 500 errors.
7. DDoS attacks can have an effect.
8. The fake traffic that competitors send.
9. Soft 404 errors and the like.
10. Site speed, or domestic filtering.
