Punished by the latest Google December 2020 update

Hi!

Has anyone been able to identify what the latest Google December 2020 update hit?

One of my big sites have suddenly dumped horribly on the Google rankings a few days ago and I dont know why. Traffic has dropped by more than 50%. It is a Norwegian site in the Norwegian marked called ebutikker.no if anyone is interesting to research a bit even if you dont understand the language.

One of my main keywords that was high up on page 1 is now suddenly in place 14 and page 2. All other subpages have also fallen similarly and they have never been so low before.

I think my site has much better quality than many of the pages that are in front of me now. That's why I wonder what has happened. Maybe they have a stronger backlink profile? Are they faster? Are they better on mobile? Do they have better usability?

I'm still trying to figure out why and I read forums, fb groups and seo pages and will keep you updated if I find out more. It seems that many people experience lower rankings and loss of traffic, but some also experience that it has gone up.

One wrote that he thought Google suddenly rewarded keyword stuffing again, which is an outdated and not recommended strategy.

I do not see anything unusual in the Google Search Console yet on my site ... but it might take some time?If any of you have 5 minutes to spare and know which sites that got punished in this update I'm curios to know.

Andreas