This request requires matching csrf cookie and header error

Question

 I can't follow on twitter with my bot anymore!

 

Twitter changed it's algorithm and now it just uses APIs...

So my new code is like this, and it gives this error:
"This request requires a matching csrf cookie and header. 353 code error on twitter"

Here's the code:

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://api.twitter.com/1.1/friendships/create.json");
request.Accept = "application/json, text/javascript, */*; q=0.01";
                            request.Headers.Add("x-twitter-auth-type", "OAuth2Session");
                            request.Headers.Add("x-csrf-token", token);
                            request.Headers.Add("X-Twitter-Active-User", "yes");
                            request.Headers.Add("Origin", "https://twitter.com");
                            request.Headers.Add("Authorization", "Bearer AAAAAAAAAAAAAAAAAAAAAPYXBAAAAAAACLXUNDekMxqa8h%2F40K4moUkGsoc%3DTYfbDKbT3jJPCEVnMYqilB28NHfOPqkca3qaAxGfsyKCs0wRbw");
                            ce.Add(new Cookie("ct0", token) { Domain = "api.twitter.com" });

                            request.Host = "api.twitter.com";
                            string postdata = "challenges_passed=false&handles_challenges=1&include_blocked_by=true&include_blocking=true&include_can_dm=true&include_followed_by=true&include_mute_edge=true&skip_status=true&user_id=" + datauserid;

                            request.Method = "POST";
                            request.Timeout = 10000;
                            request.UserAgent = useragentMozilla;
                            request.ContentType = "application/x-www-form-urlencoded; charset=UTF-8";
                            request.CookieContainer = ce;
                            request.Referer = "https://twitter.com/";
                            byte[] bytes = Encoding.UTF8.GetBytes(postdata);
                            request.ContentLength = bytes.Length;
                            Stream stream = request.GetRequestStream();
                            stream.Write(bytes, 0, bytes.Length);
                            res = (HttpWebResponse)request.GetResponse();

                            stream.Close();
                            res.Close();

 

I know I'm doing something wrong in this code. I think that Bearer string never changes on twitter, it's always the same. But what is that crsf cookie and header issue. Please help me ASAP.

Maybe if I get the right token from the cookies which is "ct0" in the cookies, and add it to the header as csrf token, it can successfully follow then. But I really don't know how to get a specific cookie with C# httpwebrequest.