How do you deal with toxicity and the urge to argue back?

I'm trying to be as polite as possible and when people start arguing and being toxic using phrases like "f**k your family" I usually try to say something like "do you really have to be so mean to someone over a match" but it just resolves into more toxicity and they laugh at you for trying to be civil.

In last days it made me especially feel bad that almost every match there's at least 1 person who's being extremely toxic towards the team or me. I really like this game but the toxicity is just so over the top in Dota.

Of course I mute toxic players eventually during the match but reading this nasty stuff before muting them really kills the mood for me. How do you deal with it guys? I know about the option to mute all even before starting the match but you need to communicate with your team so it's not really a good choice.