I've recently transitioned to GA4, but I've observed a substantial decline in the number of users reported in Analytics. This decrease is considerably lower than what I would anticipate based on the historical trend before the transition and the data I see concurrently in Webmaster Tools.
I'm currently only seeing approximately 15% of the visits that I would typically expect to be tracked.
I've integrated GA4 into my website using the official WordPress plugin and have ensured that all available updates are applied.
Has anyone else experienced a similar problem or can provide insights into how to address this issue?
It's possible that you might be looking at a different metric when you're examining the "most prominent users" metric on analytics.google.com. This distinction arises because, in your UA property, the "Total Users" metric on analytics.google.com is labeled simply as "Users."
Conversely, when you access your GA4 data on analytics.google.com, the "Users" metric highlighted there actually refers to "Active Users," which can vary from the "Total Users" metric.
To sum it up, GA4 emphasizes "Active Users," while UA focuses on "Total Users." "Active Users" represent individuals who revisit your website or navigate within it, whereas "Total Users" encompasses one-time visitors as well.
If you examine your GA4 "Explorations," you may discover a "Total Users" value that is more in line with what you see as "Users" in your GA4 data.
For additional information on this topic, please refer to the following link:
Link to Google Analytics Support Article
I usually use Raw Data. By using EasyInsights, I can fetch raw GA data and store it in my PostgreSQL table. I can then fetch data from this table on Google Sheets or any other BI tool of my choice