VPN for iPhone?

Should I be using one? Why or why not? Along with that are there free options that do what i would
Need.

Should I be using one? Why or why not?

Google it…

As for free ones there is a reason they are free. Do you think the company buys servers/hires a staff/ pays their internet bill just for a free service? Nope very likely they are mining your data. Well worth paying for a trusted VPN