iPhone back up password

I’m sure many have asked this question to Apple many times but there has to be some way to retrieve or restore the back up on a new device taking all possible proof of identity etc .

this is really upsetting with the storage increasing you cannot take back of a 256-412 GB of data that often on your mac .

i clearly remember not ever setting up a encrypted back up password at first place .

if I did it would save the keychain and there is no such PW there

Apple need help here !!!