Not sure if you're still following, @allensmith81, but: the way I've heard others check for this is looking at whether the same trend in traffic increase / decrease happened over the same period of time in past years per season.
If it's different this time, and nothing major changed on your end (like a feature implementation), it was probably an outside influence that's affecting others too.
Hope that helps. Sounds like it is post-pandemic falloff, from what @melissapotvin and others shared.
Also, thanks @Chao for the great point about watching algorithm changes, and @elbranscomb for the helpful article.
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