Android 11 does not allow third-party applications to access some system folders, such as /data/ and /obb/. When trying to interact with these folders, the system gives out an error. This is done to improve the security of the system and its protection from possible attacks by intruders. However, as usual, enthusiasts immediately found a way to bypass restrictions.
A guide has appeared on the Web, with the help of which it is easy to access system folders, even in the absence of Root rights. The only thing you will need is the Android Debug Bridge program and the computer. And you can both copy files to the cache of the smartphone, and delete from there.