Before buying a VPN plan please check about the country where the particular company is incorporated in. You are not safe if that country is USA or Canada, no matter what they are saying. Same applies for many other countries who signed a special agreement with US intelligence (e.g. read about so called 14 Eyes). Which includes Norway, UK and several others. Also avoid European countries in general. There are also issues with certain VPN services that use insecure encryption that is vulnerable to eavesdropping. Last but not least - make sure that your kill switch is on. In most VPN clients it is off by default, even if the provider supports kill switching.
One of just a few VPNs that I can recommend is NordVPN.