Keep an eye out on Nord VPN.  They often have special pricing where you get a three year subscription for the price of one or something like that. If you can find a lifetime subscription to them even better. They are a little more expensive than some of the other ones, but I think that they do a good job of protecting your data and because they are getting paid they just put out a better product in general.  I can use their VPN service on any OS and any device.