Hi there,
you can use a GP Block Element and GenerateBlocks.
1. In Appearance > Elements -> Add New: Block element.
2. in the element set the Type to Page Hero.
3. set the Display Rules Location to : Author Archive
This will create the element before your author archives post loop.
4. In the element block editor you can now build your template.
To get your ACF fields:
5. Add a Headline Block, in its sidebar block settings Activate the Dynamic Data
and set its Content Source
to Author Meta
in the field provided add your ACF field name.
Repeat this for each fields