sharepoint online – How to install SharePointOnline.CSOM when module resides in the Documents/windowspowershell/Modules folder?

I have found a powershell script that i want to try out. The script makes a connection to my Sharepoint tenant using the module “SharePointOnline.CSOM”. So i have put the module in the Documents/windowspowershell/Modules folder. But I getting an error at line:

Add-Type -Path "C:Program FilesCommon Filesmicrosoft sharedWeb Server Extensions16ISAPIMicrosoft.SharePoint.Client.dll"
Add-Type -Path "C:Program FilesCommon Filesmicrosoft sharedWeb Server Extensions16ISAPIMicrosoft.SharePoint.Client.Runtime.dll"

What can i do about this?

Greetings. Peter