The traffic between the VPN and the target site is anonymous because most VPN’s use a rotating IP system. If the VPN truly doesn’t collect any data, the target site has no clue who is actually visiting other than that randomized IP address.

The point is, VPN’s do work and the biggest caveat is finding a VPN provider that you can trust.

I use Mullvad. You don’t have to give them any personal information at all.