Please check the following information to find your account.
1. Make sure you have logged in the correct Google Play account on your phone
2. If it is not the Google account you used, go to the Google homepage (www.google.com)> Login> Find My Account to find an account
※ Account not linked to Google Play/Apple/Facebook: Unrecoverable in case of loss
No information is collected for guest accounts and they are stored only on the device. If the account is lost due to factory reset or device change, it is not possible to recover it, so please make sure to link your account.