If you are not satisfied with the way your teammate plays, you have the possibility to adjust their difficulty level. This will improve their gameplay. You can do so by following the steps below: 

1. Launch the Canasta app

2. Open the settings (gear icon in the upper right corner)

3. Under the first tab "Game" tap on the button right next to "Teammate Strength“

4. Select one of the six options. Your selection will be marked by a green checkmark.