Google updates the algorithm where there are several rummers and several facts about it , some say it will create a big difference other says there are nothing much.
“Medic” Core Update — August 1, 2018
Google confirmed a “broad core algorithm update,” with wide reports of massive impact. It rolled out over the period of about a week, but peaked on August 1-2. This update seemed to disproportionately affect sites in the health and wellness vertical, although large-scale impact was seen in all verticals.
Chrome Security Warnings (Full Site) — July 24, 2018
After warning users of unsecured (non-HTTPS) forms months earlier, Chrome 68 began marking all non-HTTPS sites as “not secure.” The changes rolled out on July 24, but rely on users installing the latest Chrome version, which can take weeks or months.