Hi  rani,
Check this example. Now please take its reference and correct your code.
Database
For this example I have used of Northwind database that you can download using the link given below.
Download Northwind Database
Model
public class CustomerModel
{
    public string Customers { get; set; }
    public string Total { get; set; }
}
Controller
public class HomeController : Controller
{
    public ActionResult Index()
    {
        return View();
    }
    public ActionResult GetCustomers(int page, int pageSize, int skip, int take, string searchTerm = "")
    {
        NorthwindEntities entity = new NorthwindEntities();
        var customers = entity.Customers.Where(x => x.ContactName.StartsWith(searchTerm) || string.IsNullOrEmpty(searchTerm)).OrderBy(c => c.CustomerID).ToList();
        CustomerModel model = new CustomerModel();
        model.Total = customers.Count.ToString();
        model.Customers = Newtonsoft.Json.JsonConvert.SerializeObject(customers.Skip(skip).Take(take).ToList());
        string json = Newtonsoft.Json.JsonConvert.SerializeObject(model);
        json = json.Replace(@"\", "");
        json = json.Replace("\"[{", "[{");
        json = json.Replace("}]\"", "}]");
        return Content(json, "application/json");
    }
}
View
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>Index</title>
    <link rel="stylesheet" href="https://kendo.cdn.telerik.com/2020.1.114/styles/kendo.default-v2.min.css" />
    <script type="text/javascript" src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
    <script type="text/javascript" src="https://kendo.cdn.telerik.com/2020.1.114/js/angular.min.js"></script>
    <script type="text/javascript" src="https://kendo.cdn.telerik.com/2020.1.114/js/kendo.all.min.js"></script>
    <script type="text/javascript">
        var app = angular.module("MyApp", ["kendo.directives"]);
        app.controller("MyController", function ($scope, $http) {
            $scope.mainGridOptions = {
                dataSource: {
                    schema: { data: "Customers", total: "Total" },
                    serverPaging: true,
                    transport: {
                        read: function (e) {
                            var requestData = {
                                page: e.data.page,
                                pageSize: e.data.pageSize,
                                skip: e.data.skip,
                                take: e.data.take,
                                searchTerm: $scope.SearchTerm
                            };
                            $http({ method: 'POST', url: 'Home/GetCustomers', params: requestData })
                            .then(function (data) { e.success(data.data); });
                        }
                    },
                    pageSize: 5
                },
                pageSize: 5,
                serverPaging: true,
                serverSorting: true,
                pageable: { refresh: true, pageSizes: [2, 25, 50] },
                groupable: false,
                sortable: true,
                columns: [
                    { field: "CustomerID", title: "Id", width: "80px" },
                    { field: "ContactName", title: "Name", width: "150px" },
                    { field: "City", title: "City", width: "100px" },
                    { field: "Country", title: "Country", width: "100px" }
                ]
            };
            $scope.Search = function () {
                $('#tblCustomers').data('kendoGrid').dataSource.read();
                $('#tblCustomers').data('kendoGrid').refresh();
            }
        })
    </script>
</head>
<body ng-app="MyApp" ng-controller="MyController">
    <input type="text" ng-model="SearchTerm" ng-keyup="Search()" />
    <hr />
    <kendo-grid options="mainGridOptions" id="tblCustomers"></kendo-grid>
</body>
</html>
Screenshot
