Libera Chat has put a ton of work into creating a special bridge allowing Matrix users to join any of their IRC rooms with just a single link. Read more about it here:
Below are instructions on how to create a link…
Search for the name of the Libera Chat IRC room you’d like to join here
Below is an example of searching for Debian’s IRC channel name.
Paste the following into your browser’s address bar replacing
<RoomName> with the name of the room including all