Retrieve all the changes (add, update & delete) occurred on the list item using CSOM

GetItemChanges_csom.cs

//CSOM Assembly version - 16.1.4727.1200
//using Microsoft.SharePoint.Client;
//using System.Net
//GetItemChanges(credentials, weburl, listtitle, itemid);

//This method returns all the changes (add, update & delete) happened to the list item
private static void GetItemChanges(ICredentials credentials, string weburl, string listTitle, int itemid)
{
    using (ClientContext ctx = new ClientContext(weburl))
    {
        ctx.Credentials = credentials;
        Web oweb = ctx.Web;
        ListCollection lists = oweb.Lists;
        List targetList = lists.GetByTitle(listTitle);
        ListItem targetItem = targetList.GetItemById(itemid);
        //ChangeQuery helps the method gets the changes by setting appropriate property as true
        ChangeQuery cq = new ChangeQuery();
        cq.Item = true;
        cq.Add = true;
        cq.Update = true;
        cq.DeleteObject = true;

        //SP.ListItem.GetChanges(ChangeQuery)  - Method available from CSOM Assembly version - 16.1.4727.1200     
        ChangeCollection cc = targetItem.GetChanges(cq);
        ctx.Load(cc);
        ctx.ExecuteQuery();
        Console.WriteLine(cc.Count.ToString());
    }
    Console.WriteLine("Press any key to exit...");
    Console.Read();
}

How to get the deleted filename?
I'm getting notification through Webhook whenever the file is added/modifed in Sharepoint. This is working fine.
But whenever the file is deleted, it's getting failed since the file itself not present when it is deleted.