Resolved: Here is a possible solution for those without a professional email address...
How to Use Power BI Service for free without a professional email in 4 steps:
So I will cancel the subscription by 16 January 2023
The subscription is free for about 30 days, otherwise it's $12.00/month.
Thanks, Frederick. You can try that, but you need to make sure to remember cancelling their subscription. The solution we have in mind involves using Azure and setting up some free Azure resources.