hello friends, I have an adult-related site, I embed pornhub videos on my site with codes. they can’t see the videos because pornhub is banned in country X. how do I do proxy forwarding I want an automatic vpn to be opened when they log in to my site

This is beyond the scope of Cloudflare; the Cloudflare proxy doesn’t work like that, and there’s really no Cloudflare product that will do this for you. Note that Pornhub requires you to use their player, so you’d have to do it at a lower level than that. You would have to create this product yourself.