Hi,
I created a new site 2 months ago, after the first month I was getting about 400 organic users from Google per day, with several keywords between the 1st and 3rd page in serp. Since November 17, after the start of the google algorithm update, I lost almost all my keywords, falling resoundingly in the serp and consequently in terms of traffic. In these days I have recovered the main keyword that has returned to the second page, then disappeared again. I don't know if the google update is already finished and I think that these problems have been caused by this update, hoping, with a little patience, to go back to the "normal".