I have been to libera but couldn't
get an answer from anyone idling
in there.
What channels are you trying and what are you interested in discussing?
If you just want to see random activity, try like #Linux or one of the distribution channels for Debian,Ubuntu, or RedHat. There are ALWAYS people (careful, thousands) asking or answering questions there.
For more niche stuff, you might just have to hang out in the channel for a few hours/days. I idle in #Amiga and #C64, as an example.
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