Sometimes, especially on social media, an argument is best won by a sudden falling-silent.
Here’s how I approach it. If you make a winning argument, and the other side in their reply tacitly admit the grounds of your valid argument, then that’s the best chance there will be for making a getaway.
The temptation is to point out in that moment that you’ve won. Doing that will only make the other person angry, defensive, pushy. They’ll bring up something else, the conversation will no longer be over, and it will be endless and fruitless.
Maybe a sudden departure will make the other person think you lost the argument, and that’s fine. If they ever bring it up later, it’s easy to explain who really lost.
And if they don’t bring it up later, but just go on thinking they won, where’s the harm in that? Two happy people seems like as good an outcome as you could possibly hope for.
An argument, with one or both people feeling argumentative, isn’t the time for seeking truth. It’s one of the worst times to try seeking truth. Emotions of indignation or contempt or anger can make us all but impervious to reason, to recognizing truth or sense.
There are times for the arduous task of seeking truth, no doubt. An argument, though, is usually good for nothing except making a quick getaway.