If you’re currently using the MonsterInsights plugin to ad the Universal Analytics (UA) tag to your site, it's the logical choice to also add the GA4 tag to your site.| NerdPress®
If your current Google Analytics tag has been added with a code snippet, this tutorial will show you how to add the GA4 tracking ID to the existing code, so both will keep tracking properly.| NerdPress®
The best method for you will depend on what your current setup with your UA tracking code is. So, first, you need to figure out how your current UA tag code is added to your site.| NerdPress®