Hi,
For you to be able to delete the file, you must have ownership of the file. Currently, you can't delete the file, as you aren't the owner. If you could open the advanced security window by pressing the "advanced" button in the security tab, and take a screenshot of the appearing window, I could have a better understanding of the situation. Based on the error messages the problem isn't that the file is in use, but rather just the lack of permissions, namely the ownership. This could also have to do with the acl (access control list), but in either case, I would need more information via the advanced security tab.
Based on the filename, however, it appears the file is an appxpackage. This also makes sense because all the apps downloaded through the Microsoft store are installed as appxpackages. You can easily uninstall these apps using the remove-appxpackage Powershell command.
To verify this, open Powershell and type the command Get-appxPackage *SunriseBaseGame*. If this returns any output, you can proceed to remove the appxpackage.
The command Get-appxPackage *SunriseBaseGame* | Remove-appxPackage should uninstall the package.
This command won't produce output, so to verify the package has been removed, type the command Get-appxPackage *SunriseBaseGame* again. If it returns no output, that means there are no appxpackages installed with that name.
If the first command returns no output, then there are no appxpackages installed by that name, and you can proceed to try and remove the file manually. In that case, please take a screenshot of the advanced security tab, and we can continue to remove the file. If the appxpackage uninstalls, the file should disappear. Please note though, that the file might stay even if the appxpackage does successfully get removed.
Stay in touch!