All you have to do is not allow your emotions to get the better of you. If you can present your points without sperging out, or completely dismissing the others' point of view (as Leftists often do with their whataboutisms), then you win. Sneako got lucky. Most people out in the world who are normies and not terminally online are already getting sick of the Troon debate and are beginning to get braver about calling the degeneracy out the more and more they see others do it. The act of Debating isn't cancer. The people participating in it, well, that's typically a coinflip.
All Charlie had to do was admit that he fucked up, debated poorly (against Sneako, no less, and no, I will not stop hammering that point home), and moved on. Instead, Charlie got emotional during the debate, got emotional AFTER the debate, and is now huffing so much Copium it could power the West Coast for a month.
I'll be the first one to admit, sometimes, *I* get emotional trying to get my point across and fuck up a lot, but you can't dwell on that shit. Sometimes you need to decompress and log off for a couple of days.