FreeTube is a feature-rich and user-friendly YouTube client with a focus on privacy.
A massive thanks to @LuanRT for providing the fix regarding to the extraction of the deciphering functions. Also, big thanks to @PikachuEXE for coming up with a potential alternative solution!
Yes, that should work, I believe, though I am no expert. I watch YT via Freetube with my VPN on most of the time, and right now too. I use Mozilla VPN if that matters and have it connected to just some other US city, but as always, YMMV.