Unable to access website in Safari using the built-in VPN

Respected Team,

I am a new Apple user and recently switched to this Safari browser. Due to global internet issues, several websites are currently blocked in my country. I typically use a VPN to access websites like gamedva, an1, apkqad and others, where I download games for mobile. I had heard that safari browser includes a built-in VPN, so I installed it, but I am still unable to access these websites. Could you please guide me on how to properly use the VPN feature?

I apologize for any language errors, as English is not my native language.

[Re-Titled by Moderator]