Need help_how to get User direct Manager or reporting manager and reporting manager manager?

i am trying to create a form , can I know how to auto populate the user's direct manger and it's manager direct officer?

I trying using

Office365Users.ManagerV2(User().Email).mail - it not working

Needs the User

RO (reporting officer)

first name, last name, email, department and title all the field are single line in SP list.

then RO direct manager call it AO

first name, last name, email, department and title all the field are single line in SP list.

kindly help to advise on this thank you

error show

error manager.PNG

i try this error too - DataCardValue5 is the User name who log to the screen.
If(
ApplicantForm.Mode = FormMode.New,
{
FirstName(RO): IfError(Office365Users.DirectReportsV2(DataCardValue5.Selected.Email), blank(), Office365Users.DirectReportsV2(DataCardValue5.Selected.Email).displayName
Claims: "i:0#.f|membership|"& Lower(varRO.email)
},
Parent.Default
)

Manager RO same field for RO Manager (AO)