What is the correct way to use a proxy to work with Selenium?

Question

C++ / C#

How to work with a proxy? I always have an error, they say 60 seconds have passed and he didn’t wake up, if I check on the sites, they write that they are working (Proxy).

И так делал

            var proxy = new Proxy();

            proxy = new Proxy();
            proxy.Kind = ProxyKind.Manual;
            proxy.IsAutoDetect = false;
            proxy.HttpProxy = "59.124.224.205:3128";
            proxy.SslProxy = "59.124.224.205:3128";
            options.Proxy = proxy;

И так делал 
            options.AddArguments("--proxy-server=http://198.199.120.102:8080");
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