Have you tried Mullvad?
https://mullvad.net/en/help/dns-over-https-and-dns-over-tls
TL;DR
dns.mullvad.net - 194.242.2.2 (no blocking)
adblock.dns.mullvad.net - 194.242.2.3 (ad and tracker blocking)
base.dns.mullvad.net - 194.242.2.4 (ad, tracker, malware blocking)
And others but I primarily use the last two. They offer it as a public service, similar to quad9.