Hello! We are working on it 👌

If you've noticed any suspicious player behavior in battles, please feel free to notify us via the "Report Cheater" button. It's available in the player's profile. To find players from previous battles, tap on the Friends icon in your Hangar and select the "Recommended" tab. Thank you! 

About that also should improve what that because once someone in chat told me something really inappropriate.of course I reported them but still.

The updates on chat and its more decent moderation are expected in the future!