Hi
Welcome to Microsoft community.
The issues on Windows Sandbox - Optional Features - Missing Services is out of reach of the response support community. It is more suitable for publishing on Microsoft Learn, you can click on "Ask a question", there are experts who can provide more professional solutions in that place. Here is a link to the forum where you can raise specific scenarios and share your idea to help solve the problem.I won't be able to help you, but I'll leave that question open in case one of our amazing volunteers has ideas for you.
Best regards
Derrick Qian | Microsoft Community Support Specialist