Need help finding routines

Hi! I’m 22(f) 5’2” and 200lbs. I’m a bit of the chubby side and really want to build muscle and tone what muscle i already have. I used to play basketball with friends on a regular basis but moved after high school and stopped playing. I recently started going to the gym. When I workout I tend to do full body workouts without realizing. I’m wanting to split my workout into segments like chest, legs, back and arms but not really sure how.