After a little research I see that Samsung smart TV's do not use Android. That makes it harder (maybe impossible) to install a VPN on your TV.
Try contacting the major VPN services such as ExpressVPN, NordVPN and see if they can help you.
There may be an alternative to using a VPN. I'm not familiar with the method described under option 3 on this web page:
https://cybernews.com/how-to-use-vpn/set-up-vpn-on-samsung-smart-tv/#:~:text=Is there a VPN app,doesn't support VPN apps.