On a rooted device, X-plore doesn’t show all folders under /data/data/. It shows only two folders: com.google.android.gms and com.lonelycatgames.Xplore
Since X-plore was upgraded to target Android 11+, there is new Android security affecting which folders app can see, even on rooted device.
This happens on currently most used method to root Android device by Magisk Manager, but probably also on other root managers such as SuperSU.
Change Magisk setting Mount Namespace Mode to Global Namespace.