I don't trash talk in games, at all. It's never been my thing. Even when I play against other people, my mindset is more that I'm playing against myself and proving that I'm doing better, so when I beat someone I feel accomplished and that's good enough.
That being said, though, I really don't mind when people do it. It gives me a bit of fuel to try harder. You gotta shift your perspective instead of letting it get to you.