Why does the Christian doctrine seem so far from the Bible? Upon reading the Bible, I have found that that Christian doctrine differs heavily from the scriptures.
A few of the differences:

Circumcision
Feast days
Following the statutes &amp; judgements
Keeping the Sabbath

How is it that Christianity, which is supposed to be followers of Christ, don't seem to follow him at all?
I hold the view that there is only one Christ who brought one doctrine and therefore Christianity should all be following the same teachings. Yet there are many divisions and many varying teachings.
Welcome to the site. I'm assuming you are just starting to investigate Christianity. This is a good question, so I'll try to give you a simple answer.
Most of the Bible, which we call the Old Testament, was written for the Jews. It tells the story of their interaction with God, who gave them all sorts of laws and commands to follow. But one of the things he said was that there would be a person who would come who would set them free.
That person is Jesus Christ, and his story is in the later part of the Bible, the New Testament. The New Testament starts with the Gospels, and is the book of Matthew and everything after. Jesus (speaking for God) tells people that the old laws and commands weren't the point. You didn't have to follow all the old laws like circumcision or feast days, but a new law based around love. He gave his life specifically to free us from it. The old law is useful to know about, but the new law supersedes it.
So if you've been reading only the early part of the Bible, you will find a lot of things that Christians don't do. If you read the later part, especially the Gospels (the books Matthew, Mark, Luke and John) you will understand a lot more. I've simplified this a lot, and if there are specific points you don't understand then feel free to ask about them.