Winston smith’s rebellion does make his desires a lot bigger than you think. His first goal is to take control of the government. Throughout this, at the beginning his is stopped by Julia. His action of sleeping with her was done out of a desire to rebel against the government. Julia and Winston’s believed that doing something for yourself and only your self is considered rebellion. In their entire purpose they just wanted to rebel and gain control and power of the government.
At the end Winston broke and he loved big brother.