Bills are too Big

Why does every bill brought up in Congress have to be thousands of pages? Obviously, it is easy to hide lots of unnecessary or unwanted spending and regulation on the pages. Another obvious issue, why does one side have to win or appear to win? A better way; have small specific bills where everyone could see and understand exactly what the bill represents, and even better, the winner would be the taxpayer, the family, the worker, and the people. Every bill should be a bipartisan bill, there should always be a filibuster, what is this Budget Reconciliation process? Who benefits?