The IRC channel is often too quiet as people are either away or near the screen but not talkative until someone starts a conversation. Sometimes, though, you can chat there without waiting too long for someone to read it and reply. You can always try. Some beginners from very different places (like USA, Russia, Ukraine, Belarus, India, South Korea) are appearing there lately, not always able to write proper Tokipona but sometimes they do quite well or learn quickly.
Another option can be to follow Tokipona users on Twitter and start writing the language there, for example.