The Hidden Triggers Behind Your Website’s Traffic Plunge—and How to Beat Them Fast
If you are unsure exactly when you made a change, use the Wayback Machine to compare current and past versions of your site.

If a site change seems to have caused the decline in traffic, you might have to restore your old site version from backup and put the new version in a staging site for auditing.
Watch for shifts outside your control
Sometimes the problem isn’t with your site at all. External factors like seasonality, search trends, or lost backlinks can lead to sudden traffic dips, especially if your content depends on timing or shifting public interest.