Setting up Mail Account like to Gmail in IOS

I have the alias problem in IOS which I see members have seen solved with IOS 14.1 but I still have a problem. For other reasons I changed my Google password. Whilst it was accepted on my Mac it wasn't on my IOS devices for mail. Google app and Gmail app all worked fine. I therefore made inactive the mail accounts created as "others" and switched on Mail in the "standard" message. Of course you cannot get aliases this way. I then tried to set up the accounts again but all times I get the message "No password provided for "my name". or a similar variation.

All emails from our IOS devices now go out from our gmail account name. We can only use aliases from the Mac

Until Apple sets up an easier process for aliases similar to that in OSX I am stuck.