Script ran successfully but still software is not uninstalled - windows

Question

Even though the below script runs successfully to remove software, I
am still able to see the software in the control panel program list,
what I am doing wrong?
See the command below :
PS D:\Project> .\ScriptWithBelowCode.ps1 -ComputerName
"X-XXX50947" -AppGUID XXXXXX-A60B-4899-A369-XXXXXXX
Uninstallation command triggered successfully
[cmdletbinding()]
param (
[parameter(ValueFromPipeline=$true,ValueFromPipelineByPropertyName=$true)]
[string]$ComputerName = $env:computername,
[parameter(ValueFromPipeline=$true,ValueFromPipelineByPropertyName=$true,Mandatory=$true)]
[string]$AppGUID
)
try {
$returnval = ([WMICLASS]"\\$computerName\ROOT\CIMV2:win32_process").Create("msiexec `/x$AppGUID `/norestart `/qn")
} catch {
write-error "Failed to trigger the uninstallation. Review the error message"
$_
exit
}
switch ($($returnval.returnvalue)){
0 { "Uninstallation command triggered successfully" }
2 { "You don't have sufficient permissions to trigger the command on $Computer" }
3 { "You don't have sufficient permissions to trigger the command on $Computer" }
8 { "An unknown error has occurred" }
9 { "Path Not Found" }
9 { "Invalid Parameter"}
}
Command to execute .\ScriptFileWithAboveContent.ps1 -ComputerName "X-15XX150947" -AppGUID 30F836D2-A60B-4899-A369-XXXXX884EAF
Command to get GUID
Get-WmiObject -Class Win32_Product ` -Filter "Name like '%Microsoft%'" | Select-Object -ExpandProperty IdentifyingNumber
Second try
$app = Get-WmiObject -Class Win32_Product | Where-Object {$_.IdentifyingNumber -match "XXXXXX-A60B-4899-XXXX-B0FXXX84EAF" }
$app.Uninstall()
I am getting error showing below
PS D:\Project> .\ScriptFileWithAboveContent.ps1
Exception calling "Uninstall" : "Operation is not valid due to the current state of the object."
At D:\MicrosoftAIM\ScriptFileWithAboveContent.ps1:2 char:5
+ $app.Uninstall()
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [], MethodInvocationException
+ FullyQualifiedErrorId : WMIMethodException
Third try
The below script ran successfully, But still, the software is still in the program list.
echo "Getting product code"
$ProductCode = Get-WmiObject win32_product -Filter "Name like '%somesoftware%'" | Select-Object -Expand IdentifyingNumber
echo "removing Product"
# Out-Null argument is just for keeping the power shell command window waiting for msiexec command to finish else it moves to execute the next echo command
& msiexec /x $ProductCode | Out-Null
echo "uninstallation finished"
PS D:\MicrosoftAIM> .\ScriptWithAboveContent.ps1
Getting product code
removing Product
uninstallation finished
PS D:\MicrosoftAIM> Get-WmiObject -Class Win32_Product ` -Filter "Name like '%Microsoft%azure%info%'"