Since Android 11, it’s not possible to open these folders in Internal storage or on memory card:

• Android/data
• Android/obb

This is part of Android’s increasing security, and is also mentioned on Android developer site.

For Internal storage, X-plore tries to solve this by asking for special access as written here. You have to choose Android folder on device’s Internal storage, then X-plore should be able to read and write to these protected folders.

For memory cards, opening these folders may not work at all.