Hi Caeltiegirl
and welcome to the Apple (user-to-user) Community!
Re: "Personal voice getting started
I have tried to do a personal voice. I have a MacBook Air from 2020 with SONOMA 14.5".
Wonderful to hear you have been taking steps to begin using a personal voice. Thank you kindly for providing the info on your Mac model and MacOS version. .
Seems a Mac with Apple Silicon is needed for Personal Voice:
Now we just need to know if your MacBook Air 2020 has Silicon (M1 chip) or is an Intel Mac (not Silicon)
Mac computers with Apple silicon - Apple Support
says:
MacBook Air introduced in 2022 or later, plus MacBook Air (M1, 2020)
You can check, by clicking the Apple menu > About this Mac
In the small window that opens: check whether the list shows the M1 chip. If so we're good!
(Else:
if the list shows an item labeled Processor: and gives the name of an Intel processor = not a Mac with silicon)
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Re: "I am unable to get past the sound check statement".
If your Mac is one of the late 2020 models with silicon:
Note: To create a Personal Voice on your Mac, you must have a login password set.
Apple does provide a step-by-step article (link below) for Mac :
Create a Personal Voice on Mac - Apple Support
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There's also a video about creating and using Personal Voice on iPhone and iPad, that may be helpful
https://www.youtube.com/watch?v=owBzKbpiNjE
All the best :-)