Hi Jack, This is Ramesh.
If you wish to send feedback to Microsoft, the best option is to use the Feedback Hub (Win + F) because the development team may not visit these community forums.
Let me know what happens when you try to install .NET Framework 3.5 using OptionalFeatures.exe. If you get an error code, please mention it here.
The reason for failing to install an optional feature will be recorded in the CBS logs. Upload your CBS logs to OneDrive and share the link here.
c:\windows\logs\cbs\ <= Zip and upload all files in this folder.
(How-To: Share OneDrive files and folders - Microsoft Support)
https://support.microsoft.com/en-us/office/shar...
:: OneDrive sharing options - screenshot ::
[https://imgur.com/a/vZyxpY9](https://imgur.com/a/vZyxpY9)