Skype is an app developed and distributed by Microsoft that allows you to make [free calls], [chat], and [video calls]. Since it is a Microsoft product, it is of course installed by default on [Windows 11] as well. If you don’t need [Skype] because you’re using other calling apps, uninstall [Skype] from Windows 11.
How to uninstall Skype?
Remove “Skype” from “All apps” in the Start menu
When deleting from “Settings”
When deleting from PowerShell
Other Windows 11 settings and usage are summarized, so please refer to it.