Hello @ZN,
Welcome to Microsoft Q&A forum.
If you have a valid subscription, then "Visual Studio 2019 for Mac" should be available here: Donwloads – Visual Studio 2019 for Mac.
The valid subscription is usually a paid level subscription. Note that "Visual Studio Dev Essentials" is not a valid subscription in this situation.
BTW, as VS 2019 for Mac ended of support on May 23, 2022, and VS for Mac is scheduled for retirement by August 31, 2024, did you consider using alternatives like the C# Dev Kit for Visual Studio Code?
Sincerely,
Tianyu
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.