Hi there!
Change in ranking is normal considering the digital competitive world we live in now. But there is nothing that we cannot do to improvise ??
Google algorithm changes significantly everyday and keeps on evolving. These updates impact overall gradation structure. A significant change in the URL’s and page structure, may take some time for re-evaluation of the content and its relevance as Google algorithm starts anew with the indexing and go through all the URLs and pages to bring best results.
Crawling and indexing the new URLs may take time. A few weeks to a few months is expected time. We suggest to monitor the crawling in the Google Search Console to keep track of the activities and for any updates from Google. If there is/ are any page(s) or URL(s) that may require your attention, Google will provide you some information. You may make changes accordingly.
As this is a competitive digital world, we believe the competitive field has also evolved. Users tend to keep on improving their content & optimizations to stay on top in the competition. This may impact your ranking.
Go through your Google Search Console to keep track of the changes and results.
Warm Regards,
MilesWeb!