First, i would look at whether it was a site wide or URL specific problem. A site wide ranking loss could be something like penguin. However, if only a few of the site pages have experienced a ranking drop, then there might be an issue related to search intent, freshness, or competitors.
The first thing I check is whether the traffic drop aligns with a Google algorithm update. If it doesn't, I look for technical issues like indexing, crawl errors, robots.txt, canonicals, or server downtime. Then I review Search Console for affected pages and queries, check recent backlink losses, and finally compare any recent content or site changes. Most ranking drops can usually be traced back to one of these areas.
The first thing that I would check is whether it is just me who has shifted to HTTPS or whether other competitors has done it as well. In case everyone has shifted i would give it a couple of days before making any move.
Improve both content and backlink building strategy. It will give result slowly and you need to be patient throughout the process. In case, you do not see any progress in 1 year or so., you need to move on to other projects.
I can check GSC first indexing afected pages and the exact drop date.
The first thing that i check is whether the fall was site wide or on particular pages and queries using search console. if it happened suddenly i will check for technical and indexing issues before going for backlinking or the content.
Same for me, GSC is always the first place that I go. After that, I look at serch intent, content gaps, and competitor coverage of the needs of the users.
The first thing I check is whether there was a google algorithm update. Then I review Search Console for indexing or technical issues, followed by ranking changes, traffic sources, backlinks and content performance.
