How to host a static website that's not indexed by Google (and other search engine)?

Say I want to host a static website that's only for my friends (assume they don't know how to use Tailscale, TOR, I2P, and similar), and I want to make it only accessible by opening the link since the webpage is only for my friends specifically. Any idea of how this can be done?

My webpage would be just a small static html files with light CSS and JS so it's not going over 10MB. I prefer something that's hosted on a provider and not my own hardware for security reason. I don't care the upload limit, I just want it to have "private" option for free.

And no, it's not because I don't want AI to scrap it. AI will probably find it but not random human that's outside of my friend group.