https://netsplit.de is a good resource for finding servers and networks as well as chat rooms across all of them, and a healthy dose of analytics data as well.
For me just now, I had to take a bit of a breather and calm down for a second, as soon as I saw "Exploring IRC" I was taken back 30 years in time or so, when IRC was brand newish, and it paid to have a text file somewhere full of details to join the network and find out, in realtime, what was happening in the world.
These days I just use https://www.irccloud.com/ as it comes with a decent mobile app and a good web interface and everything is in sync like any modern chat app. Getting this working with znc is a lot of work.
Readit News
Oh, how woolly things were before the web.