Hi, good day!
The best thing to do in this situation is to perform a Clean Install of Windows 11. However, you will need to find another working Windows computer from a family member or friend near you to create the Windows 11 USB Installation media.
Find another working computer then download the Media Creation tool (Click Download tool now). Use the tool to "Create installation media (USB flash drive at least 8GB in size) to install Windows 11". Instructions inside the link.
Note: Please make sure to uncheck the "Use the recommended options for this PC" box. Please check the link below for more details.
https://support.microsoft.com/windows/create-installation-media-for-windows-99a58364-8c02-206f-aa6f-40c3b507420d
If you want to retrieve your important files, Insert the USB Installation media into your computer. Please change the boot order in the Bios Settings. Boot your PC from the Installation Media you created.
Click Repair your computer > Troubleshoot > Command prompt
Type: notepad.exe
Press Enter
Click File, then Open
This will open a Mini-Explorer that you can use to find folders or individual files that need to backup, right click the files to Send to USB flash drive.
Kindly refer to the link below on How to Perform a Clean Install for more details.
https://support.microsoft.com/windows/reinstall-windows-with-the-installation-media-d8369486-3e33-7d9c-dccc-859e2b022fc7
If a Clean installation of Windows resolves the issue, I'd also recommend opening the Feedback Hub app and submitting feedback about what happened. Including details that the issue began immediately after installing the latest Windows update can help Microsoft investigate the problem.
Afterward, you may want to pause Windows Updates temporarily (Settings > Windows Update > Pause updates) for a short period. This can help prevent the same update from reinstalling immediately while you monitor for an updated release or an official fix from Microsoft.
I look forward to receiving your update and I'm willing to collaborate with you till we resolve the issue. Do keep me informed by clicking "Add comment" below.