Controld.com is what i use and it works great.

They have one server that blocks nothing, one server that blocks known malware, one server that blocks known malware and advertising and tracking, and a server that blocks all of that, including social media. And they are all free.

You can get airguard from fdroid, and it does periodically scan for trackers in this way.

Most have WHOIS privacy. Anybody looking up the domain can see that it’s registered to whichever company you choose but cannot get your direct information from it. Obviously, if you’re under any kind of investigation or something, then the government will just subpoena the domain registrar and ask for your personal information.

Porkbun because they accept crypto. At least to me that is a very important factor