I Face Poco X5 Pro 5G Can’t Install Any APK Files Even With Permissions Granted

My phone is a Poco X5 Pro 5G, and I’m unable to install any APK files under any circumstances.

As shown in the screenshot, I’ve granted all the necessary permissions. In the settings, when I tap on “Allow once,” two options appear — “Allow” and “Exit.” However, when I select “Allow,” it just loops back to the initial screen, and the process starts all over again.

I’ve tried this multiple times and encountered the same issue with different APK files. I even attempted it directly through the system settings and performed a factory reset, but nothing has changed.

I request that this problem be fixed as soon as possible, as it’s preventing me from installing apps outside the Play Store.