Wow. I didn't know about that. Do you think all of them free VPN services are like that?
Among the free VPN that I know of, the only one that I have tried that does not display ads and which I think do not share customers information is Proton VPN. It is a paid VPN but which has free version that can be used but with limited locations. They generate money from those that subscribed to the VPN services and not displaying ads for those that make use of the VPN freely.
Paid VPNs generate money from users subscriptions and not ads and selling of customers information.Tor is the best for privacy but can not be used to access some sites. It is free and I use it to access any site I can use to access but use VPN for the sites I can not use Tor to access.
I'm fine with ads, but selling of customers information that's too much. By the way, I think it's illegal, no?
I'm using Windscribe. They have both paid and free version, and for me free version is enough. I hope they are not selling my information to anyone. At least when I google about it I see "Windscribe is a decent VPN" and no complaints about them selling anything.