I've been using AdGuard's DNS resolver on my Android phone for a couple of months, and I'm pretty satisfied with it.
The idea is that it filters out ad networks at the DNS level, so there is no need to root the phone (nor to install any app). You just put dns.adguard-dns.com in your "private DNS" settings and that's it.
Recently, though, I've seen a couple of people around here mentioning how Adguard is not trustworthy, or "kinda shady". What's your take on them? Their privacy policy seems OK to me, but I'd be interested to know more about them.
it was good when I used it but I switched to nextdns and have liked it a bit more. adguard is based in Russia (I trust the company but who knows what laws could come about) and nextdns has been way more performant for me.
note: nextdns is based in the US so you're not really winning there but I choose to trust them so far