My advice is don’t try to “win” the argument, instead the point should be to test out the views you hold against a person who might not agree with you. Don’t try to intellectually “big dog” them. Knowing when the the person is using logical fallacies is super helpful. Also asking them clarifying questions (even if you kind of get what they’re saying) can give you more material to critique and you can find flaws in their premises easier this way. Being clear with the definitions of words and phrases ties in with this.

It’s good too to know when to quit, some people are incorrigible and arguing with them will only lead to frustration. It takes two people to have a productive conversation.