Xavier might have been in a single cell, and he might have more screen time and more time to read and even a private area to eat and do whatever he wanted, including time for him to sleep with girls, but prison was still prison.
He hated how he was treated like a pauper, he had made friends with the gang leaders and even helped them smuggle things, like: Jeff who had twenty years for robbing a bank and like he said accidentally killed the cashier, he wanted spicy noodles.
Boris, he had five years for evading tax and he wasn't given bail, he just wanted condoms, Xavier didn't ask—it was an all male prison and he didn't care, he loved people and whatever their status might be or was.
Derek intentionally ran over a dead cat, just so he can get a year, and he can boast that he had been in jail. Xavier didn't understand the whole idea behind why Derek did that, but Derek wanted an occasional cake.