You're welcome! I'm glad to hear that your controller is now connected wirelessly to your Steam Deck. To fix the button mapping, you can follow these steps:

1. Run Steam's Big Picture mode by clicking on **View** and selecting **Big Picture Mode**.
2. In Big Picture mode, click on the **Settings** button located in the top-right corner.
3. Select **Controller**, then choose **Edit**¹.
4. Press each button on your controller that you want to remap.
5. After pressing a button, you will see a list of button commands that you can map to the specific button you chose.
6. Choose the desired button command from the list and repeat this process for each button you want to remap.

If you encounter any issues or need further assistance, please let me know!