Read this
Put this instead.
<Installation InstalledByMsi="false">
<InstallationTarget Version="[12.0,17.0)" Id="Microsoft.VisualStudio.VSWinDesktopExpress" />
<InstallationTarget Version="[12.0,17.0)" Id="Microsoft.VisualStudio.Pro" />
<InstallationTarget Version="[12.0,17.0)" Id="Microsoft.VisualStudio.Premium" />
<InstallationTarget Version="[12.0,17.0)" Id="Microsoft.VisualStudio.Ultimate" />
<InstallationTarget Version="[14.0,17.0)" Id="Microsoft.VisualStudio.Community" />
<InstallationTarget Version="[14.0,17.0)" Id="Microsoft.VisualStudio.Enterprise" />
</Installation>
Version 17 is for VS19 (Helpful I know)
The MXA installs for installing XNA Game Studio are still on the XNA Game Studio Archive here
https://github.com/SimonDarksideJ/XNAGameStudio/wiki/GettingStarted
There are still only catalogued up to the 2017 version, but it's not that hard to unpack the MSIX installers and update them to newer versions (seen it working in VS2019) but the Visual Studio Team are deprecating older features that the XNA GS depends on as far as I know, so the better route is to still use the versions compatible with these installers for accessing XNA content.
The archive is still slowly updating XNA content to MonoGame, but it's slow progress with only one hand on the wheel ;D