Package SharePoint.Client.Runtime 15.0.0 is not compatible with netcoreapp3.1

I am trying to use C# in Visual Studio to write to a SharePoint List . So I tried to install the Nuget Package called SharePoint.Client.Runtime

I am getting the error message below.

 Severity    Code    Description    Project    File    Line    Suppression State Error    NU1202    Package SharePoint.Client.Runtime 15.0.0 is not compatible with netcoreapp3.1 (.NETCoreApp,Version=v3.1). Package SharePoint.Client.Runtime 15.0.0 supports: microsoftsharepointclientruntime (Microsoft.SharePoint.Client.Runtime,Version=v0.0)   

Any help is highly appreciated