Recover account

Hello so I was playing this game at 2024 when the game release and then Im starting to get busy then I forgot about the game then I change my phone to a new phone I just realize I didn't linked my account to anything yet I was wondering if you could help me recover my account I have receipt buying / trial pokemon pass also I have a brother that still have the same account and add to my account if that helps I already email pokemon support asia and pokemon support but they didnt answer it