I need AdGuard VPN only for a few websites

If you need AdGuard VPN only for a few websites, switch to Selective mode. Open the app and tap the second icon from the left at the bottom of the screen. Tap Selective mode and then tap Switch Now in a pop-up confirmation dialog. Then add the domains (e.g. example.org) or subdomains (e.g. sub.example.org) that should have AdGuard VPN on: AdGuard VPN will be off for all other websites.