Google clicks decrease, why?

[JensenBreck]

Hello,
number of clicks came from Google for my website decreased 2/3 on the total since 12/13/2017. I don't know why and how to check if there is a thing affect to rankings of my website at this time. Or it is affected by this holiday season? everyone didn't search more on Google these days?

Please help.
Thanks,
I didn't find the right solution from the Internet.
References:https://www.webmastersun.com/threads/19399-google-clicks-decrease-why

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