i use Quad9 in everything which has uBlock Origin as an available extension, otherwise NextDNS with OISD and/or Hagezi Normal (hagezi pro broke some images for me which were not ads or trackers).
or for a set and forget ad and tracker blocking DNS, Adguard. i put this on my parents devices.
tun@lemm.ee 10 months ago
AdGuardDNS
almost the same as NextDNS feature wise
Limit is also 300k per month. Plus additional device and server limitation.
Added benefit is they send you weekly status mail.
A word of advice, don’t leave their dashboard open for too long. The page request thousands of DNS request within minutes (to check for the connectivity status).