https://unbound.docs.nlnetlabs.nl/en/latest/use-cases/home-resolver.html
https://www.perfacilis.com/blog/systeembeheer/linux/setup-a-public-dns-server.html
Or even better yet, why not join OpenNIC and help a more democratic alternative to DNS root.
seedit4.me & rapidseedbox.com are both “reputable” enough in the space that you can’t go wrong.