Hi,
I'm Sumit, here to answer your query at the Microsoft Community.
All the problems are slightly interrelated.
The first step would be to try resetting Windows updates using an automatic script.
Reset Windows updates in Windows 10/11
http://www.yourwindowsguide.com/2015/12/windows...
Download the file > Right-click it and run as administrator. Reboot and check for updates again.
https://www.dropbox.com/s/ot1kwb78h3rpx3z/WuRes...
If that does not help, go to Settings > System > Recovery > Under Fix Windows updates issue, click Reinstall now.
I am looking forward to your response and am committed to working with you until we resolve this.
Disclaimer:
Content in the above blog is written by a former Windows Insider MVP, so it is safe. Do watch out for the ads.