Hello,
in case you’re using Google backups on your phone, it should be possible to restore your save games by reinstalling the game on your new phone and then just synchronizing your Google account (at least, this worked for some users who contacted support with this issue).
Related instructions can be found here: https://support.google.com/android/answer/2819582?hl=en
Alternatively, there also some apps that you can use to transfer your save games across devices without root access: Transfer save games?