What’s the most advanced free chatbot available?

I just need three things for it:

1. It must be knowledgeable about things, such as physics, math, hystory, books, geography, etc.
2. It also must be original, with a high level of SEO and AI detection score.
3. It must be available in Italy. The last part is essential. Claude 2 is very famous but with sms verification from usa (which I don't have and I don't want to give credit card info/pay to have) it's made almost impossible even with vpn.