I can't connect to the nearest server.

I ran more tests and now I have these results:

IPv4
DNS1: 2ms
DNS2: 11ms fixed

IPv6
DNS1: 3ms
DNS2: 11ms fixed

https://ping.nextdns.io
DoH configured in the browser: edgeuno-rio (IPv6) 3ms
DoH configured in the system but not the browser: edgeuno-rio (IPv6) 3ms fixed
DoH configured in the system command prompt:
IPv4 curl -4 -L https://test.nextdns.io = edgeuno-rio-1 fixed
IPv6 curl -6 -L https://test.nextdns.io = edgeuno-rio-1 fixed

Everything is perfect! Thank you so much for the incredible support! I'm going to subscribe to the pro plan now!

ping -4 google.com: 12ms
ping -6 google.com: 12ms

In the early morning, the ping to google.com was 3ms; I think it was resolving from another Google server. I don't know if this is possible or easy to fix, but the improvements are already excellent! Many thanks again!