Android 11 has restrictions on file manager to help improve the user experience and security of Android devices. To help protect users, Android 11 prevents apps from accessing files stored on a device without permission from the user. This means that apps can no longer access certain folders and files unless they have been granted explicit read/write access by the user.
To make sure your device is secure, it's important to understand how these permissions work. First, you will need to go into your phone settings and find the "Apps & Notifications" option. Next, select "Permissions," then choose "Storage." You should see an outline of all of the apps with storage permissions on your device. If you want to give an app access to specific files or folders, tap on it and then choose which type of permission you would like to grant (i.e., read-only or full control).
Finally, it's important to always be vigilant about granting storage permissions only when absolutely necessary; granting too much access could potentially put your device at risk for malicious programs or data breaches.