Easiest way is to not place any cookies and not keep any logs.
You don't have to show a cookie warning if you don't place any cookies and you're not processing any user data if you don't keep logs.
That was very much in my mind when making LokiList.
https://lokilist.com/about.php
Since I made LokiList after FOSTA killed Craigslist personals, I also made sure that all user interactions occur offsite on a decentralized, end-to-end encrypted network to minimize reliance on Section 230 protections.
I don't know where you live but maybe just knowing of the concepts should be helpful. I think you should be totally fine to start a non-commercial website without consequence, but of course this isn't legal advice.