My dad is most likely going to prison

His lawyer said 2-10 but probably near 10 years. I don't want my dad to leave me. What is prison like? I don't want him to get hurt :[ he says if it wasn't for me he would off himself. Don't let him off himself. I love him. What is prison like? Will the guards protect him if a fight breaks out? Will he be forced into gay stuff? I'm worried.