Google didn't experience any changes despite a drop of 60-70 positions in one day.

[RainDeath]

Hello friends, my website, which was ranking between 10-20 in keywords, has dropped outside the top 100 for some keywords today, and some have fallen to 50-60. Does anyone have any information on this issue? I checked Search Console and didn't see any problems. Thank you in advance. Note: Someone sent traffic to my site 3-4 days ago. The session duration had dropped to 30 seconds.