You can use a VPN but I would question why you would want to, it's going to reduce your internet speeds (and free vpn's will throttle on high traffic (which streaming is) after a period of time).
Your IP address isnt exposed to members as they connect to the site so they get the sites IP address. If you are on public wifi or share a wifi connection with people that you think might be snooping on your traffic data then sure, otherwise it's kind of pointless imo.
To get the best vpns you want to look for the ones that are not free and are not mass advertised (eg/ surf shark, cyber ghost, tunnel bear, pia etc) as the bandwidth is normally oversold which leads to even slower and sometimes unstable connections. Something like mullvad would work well but it's still going to increase the latancy on the connection as now it needs to send the data to the vpn and then forward it to the site, generally this is not what you want when you are trying to do things in real time.