A VPN is not an absolute necessary tool for Kodi or LibreELEC to function properly.
As per Kodi's VPN policy:
Quote4 Why does Kodi need a VPN?
In short, it doesn't.
The use of a VPN to defeat geo-locking of a source (limitation of access to the IP address range of the local country of the source) is not something Team Kodi supports on this forum, as such support is not a basic function of Kodi. Further, using a VPN to try and hide access to known illegal sources (pirated media torrents most commonly, or those blocked by ISPs under coourt order) violates the piracy policy.
And as a final reminder: this is not a Windows 10 forum.