Download extension from chrome store via selenium

Question

I want to download chrome extension from chrome store via selenium all goes well except the popup that asks to confirm the download the extension. I have tried to accept the popup but it didn't worked, I'm adding the full code, only missing the part to accept the popup.

here my code (written in c#):

    static void WebStoreDownload(string webdriverDirectory)
    {
        WebDriverWait wait;
        ChromeOptions options = new ChromeOptions();     
        options.PageLoadStrategy = PageLoadStrategy.None;
        options.AddArgument("no-sandbox");
        options.SetLoggingPreference(LogType.Driver, LogLevel.All);
        IWebDriver driver = new ChromeDriver(webdriverDirectory, options, TimeSpan.FromMinutes(1));
        driver.Navigate().GoToUrl("https://chrome.google.com/webstore/category/extensions");

        wait = new WebDriverWait(driver, TimeSpan.FromMinutes(1));
        wait.Until(condition => {
            try
            {
                IWebElement serverTextBox = driver.FindElement(By.Id("searchbox-input"));
                serverTextBox.Clear();
                serverTextBox.SendKeys("malwarebyte");
                serverTextBox.SendKeys(Keys.Enter);
                return true;
            }
            catch (NoSuchElementException)
            {
                return false;
            }
            catch (ElementNotInteractableException)
            {
                return false;
            }
        });

        wait = new WebDriverWait(driver, TimeSpan.FromMinutes(1));
        wait.Until(condition => {
            try
            {
                IWebElement toClick = driver.FindElement(By.XPath("//*[contains(text(), 'Malwarebytes Browser Guard')]"));
                toClick.Click();

                return true;
            }
            catch (NoSuchElementException)
            {
                return false;
            }catch(ElementNotInteractableException)
            {
                return false;
            }
        });
        Thread.Sleep(3000);
        wait = new WebDriverWait(driver, TimeSpan.FromMinutes(1));
        wait.Until(condition => {
            try
            {
                IWebElement toClick = driver.FindElement(By.ClassName("g-c-R"));
                toClick.Click();
                return true;
            }
            catch (NoSuchElementException)
            {
                return false;
            }
            catch (ElementNotInteractableException)
            {
                return false;
            }
        });
    }

and here is the popup:

I have tried like:

driver.SwitchTo().Alert().Accept();

but it didn't worked, how to accept the popup?