Hi Pratish, this is Emily.
It seems that the problem you're facing with your camera could be caused by an incompatibility between the driver and your operating system. I checked Lenovo's support website and found that there is no driver support specifically designed for your model to work with Windows 11. However, you can attempt to manually install the camera driver for Windows 10 from their website to see if it resolves the issue. If not, your options are either to revert back to Windows 10 or consider using an external webcam.
Just to clarify, drivers are typically provided by the manufacturers of the hardware. In situations where they are no longer available, Microsoft may offer a generic driver as a substitute. However, it's important to note that using a generic driver does not guarantee that it will always work perfectly with your specific hardware.