I'm using .NET Core 6 with C# 10.

What I'm trying to achieve is to run Selenium in headless mode whilst remaining "undetectable". I followed the instructions from here:

UPDATE

var initialScript = @"Object.defineProperty(Notification, 'permission', {
                        get: function () { return ''; }
                        })                                
                        window.chrome = true
                        Object.defineProperty(navigator, 'webdriver', {
                        get: () => false})  
                        Object.defineProperty(window, 'chrome', {
                        get: () => true})  
                        Object.defineProperty(navigator, 'plugins', {
                        writeable: true,
                        configurable: true,
                        enumerable: true,
                        value: 'works'})                        
                        navigator.plugins.length = 1                                
                        Object.defineProperty(navigator, 'language', {
                        get: () => 'el - GR'});
                        Object.defineProperty(navigator, 'deviceMemory', {
                        get: () => 8});
                        Object.defineProperty(navigator, 'hardwareConcurrency', {
                        get: () => 8});";

cmdParams.Add("source", initialScript);
driver.ExecuteCdpCommand("Page.addScriptToEvaluateOnNewDocument", cmdParams);