I use Nord. Yes, it's expensive but they're pretty decent. The only annoyance is that more and more public wifi hotspots, supermarkets etc are actively banning VPN traffic, which is kind of ironic given that the whole reason for using one on a public network is to prevent said traffic being intercepted, increasing the overall security of their wifi offering. Meh.
There are cheaper/freebie offerings. Hideme seem okay, and I used them before switching to Nord, but I'm not sure how well they'd stand up for the individual. Last time I checked they still kept logs and would be willing to hand them over if asked.
ThunderVPN is free, ad-based (when you connect), and flaky. But, y'know, free. And it's usually able to log onto wifi networks when others can't, so is a good fallback if your paid-for provider is blocked.