I would buy an i5 9400 PC off eBay. Dell or Lenovo. Should be less than 200$.

Theres another webserver called Caddy that is pretty nice.

What I did is Reolink with PoE off Amazon for about 100$, with RTSP so it can be absorbed into Home Assistant. Block its mac address for internet access in your router.

Could you route through a VPN like Torguard or something?

I’d love to use it but virus total always flags it as a virus and I get too scared.