There is only one instance of anyone teaching anyone how to pray in the Bible and it is Jesus teaching the disciples. They asked Him how to pray, but before He would tell them specifics, He made it clear where they should pray and that was in secret and not in public. This is something that I have not thought about much but has puzzled me from time to time . . . https://www.wordsfortheday.com/index.php/2021/08/secret-communication/