package name in andriod

1. Right-click it.

2. Select Refactor.

3. Click on Rename.

4. In the pop-up dialog, click on Rename Package instead of Rename Directory.

5. Enter the new name and hit Refactor.

6. Click Do Refactor in the bottom.

7. Allow a minute to let Android Studio update all changes.

https://www.geeksforgeeks.org/how-to-rename-package-name-in-android-studio/