Use the instructions in the docs for making a service file but replace the jellyfin binary with the flatpak binary (with the jellyfin run arguments)
They admittedly seem to have gone up in price since I last looked, but here is a listing for only $40
It will get you around ISP and network level blocking, with high bandwidth and considerable less privacy concerns than any other free vpn. It is not surprising that you will need to pay money for geo-spoofing, and due to the nature of it’s design it can only expose your client IP to cloudflare customers. As far as VPNs go, those are very minor restrictions.
Saying it isn’t a VPN is pedantry and also wrong no matter what they say.
It’s extra wasted space because compression artifacts are hard to compress lossless. It’s a shit sandwich, so people advise against it.