Windows 11 shows widgets on the lock screen. If you want you can remove the Lock Screen Widgets in Windows 11 by following this post.

Microsoft pushed a new Release Preview build for Windows Insiders. One of its hidden features is the new Lock Screen widgets, which were spotted earlier in one of the recent Windows 10 updates.

If Lock Screen Timeout is not working on your Windows 11/10 device, make these changes in Registry or Group Policy Editor and see if it helps.