Google has updated its core algorithm for August 2019. Most notable is this comment:
” We confirm broad core updates because they typically produce some widely notable effects. Some sites may note drops or gains during them. We know those with sites that experience drops will be looking for a fix, and we want to ensure they don’t try to fix the wrong things. Moreover, there might not be anything to fix at all.”
To read the full update information and to discover how your website might be affected, click this link.