Xiaomi a very cleverly abusive company out of many!
The Redmi Note 11S is already a very substantial downgrade from my in many respects better quality Redmi Note 8T (but this is a different story). Very carefully avoid to ever update any of the pre-installed applications like the file manager and especially not the system on any cheap Android phone! (I made an unintentional system-update on the Redmi Note 11S without even knowing how I authorized it. I only found out after the update via ChatGPT were to switch off the automatic system updates: settings/about phone/click on the symbol of the operating system/decline any immediate action popping up /click on the three dots in the top right corner/update settings/switch off any automatic updates. One can do this offline from the internet to heighten security. As necessary as this switching off automatic system updates might be it's not sufficient. To protect from system updates one also has to carefully avoid clicking on the again and again popping up virtual buttons on which clicked one authorises an immediate download of the dangerous update.) If you do update the operating system usually there is no way back! Updating either the operating system or single pre-installed apps (originating from Xiaomi/Redmi/Miui) expect not a single advantage for yourself but in each case far-reaching disadvantages that are specifically designed to abuse the customer and his or her trust and legal rights! Especially after updating the operating system one will experience extremely detrimental functionality downgrades. One example: The integrated app 'file manager' after the system update doesn't display the pictures even the recently made photos as before. Firstly the displayed resolution of the pictures is fiercely diminished and one can neither look at them in the landscape mode nor zoom them to their original resolution nor rename them in their displayed mode. All these (and many many more) horrible and very deliberate and intentional downgrades by Xiaomi are masked from immediate detection by everything being operated in a (sometimes slightly mostly) quite different manner. To my perception this is highly illegal but of course where there are no complainants, there are no judges. And the judges are likely too occupied with 'securely' investing their salaries and cases involving more mighty people.