PnP.Powdershell not available

[Junya98]

When I run [Connect-PnPOnline]
The 'Connect-PnPOnline' command was found in module 'PnP.PowerShell', but it does not read this module.
couldn't get in. Run 'Import-Module PnP.PowerShell' for more information.
is displayed.
[Import-Module PnP.PowerShell]
when I run
File or assembly 'System.Management.Automation, Version=7.2.0.0, Culture=neutral, PublicKeyToke
n=31bf3856ad364e35' or one of its dependencies could not be loaded. The specified file could not be found.
is displayed.
Powershell itself is not well studied and the cause is not well understood.
Can you help me?