Yes, you can! It's not possible to chat with your opponent but you can send them pre-selected emojis and stickers!

During the matches you will see a chat balloon icon on the left side of the screen. Tap it and you will be able to select an emoji or sticker to send to your opponent!

In case you don't want your opponent to interact with you (mute), you can simply follow the steps:

- Tap on the chat balloon icon;
- Unselect the "Chat" option by turning off the switch.

Doing this will mute your opponent.
Keep in mind that if you do it, you will also not be able to interact with your opponent.