The following which you should follow to turn off multi-factor authentication:-
Go to Microsoft 365 admin center -> Users -> Active users -> Select the user -> Manage multifactor authentication -> Select the user -> Disable multi-factor authentication
The following which you should follow to turn off multi-factor authentication:-
Go to Microsoft 365 admin center -> Users -> Active users -> Select the user -> Manage multifactor authentication -> Select the user -> Disable multi-factor authentication