My system, which is a Lenovo Ideapad L340 with AMD Ryzen 3, has issues with the internal keyboard whenever it updates to Windows 11 Cumulative update for May 2022 and later.
The keyboard became unresponsive. I would need to plug in an external keyboard and roll back the system update to prior to 09 May 2022 before it is working again. I tried updating to Cumulative update in June, and same thing happened. I need to roll back to 08 May 2022 before the keyboard is working.
Try open start and search for feedback and open the Feedback Hub app and report this issue. Check Windows Update and see if there is any update for keyboard and install it. Check Lenovo's support website and see if there is any new driver for your device. Have a look at: https://support.lenovo.com/us/en/