Compound exercises will allow you to put more neurological and physical stress on multiple muscle groups at a time, so it is important to prioritize them and perform them prior to accessory work in your routine. 

The main compound movements for lower body consist of squats, deadlifts, hip thrusts and leg press. They are considered compound movements because they involve multiple muscle groups. 

It is crucial to follow the order in which movements are set on your workout days. You should do compound movements at the start of your workouts due to this being the time when your body has the most glycogen stored inside of the muscles or the most energy. This will allow you to lift a heavy load for a higher set of reps and thus get better results over time. After compounds you will then move onto the accessory work as specified in the program. 

Below I have added the most common mistakes that can be easily corrected in order to see better progress, while keeping your joints and spine safe during this program.

Not hinging at the hips for posterior chain movements like deadlifts, glute focused back extensions, glute focused split squats and glute focused squats is what may be the root of lack of glute growth. Learning how to properly hinge is essential to protecting your spine and to getting the most engagement from your glutes and hamstrings. This engagement is key to glute growth. 

The difference between squats and deadlifts lies primarily in that a squat involves mostly a knee hinge and slight hip hinge, while deadlifts primarily focus on a hip hinge. It is important to properly engage your muscles and to focus on having a true hip hinge instead of squatting on the way up while deadlifting.

Learning how to properly lower the bar while deadlifting is also something that will allow you to have better muscle engagement and protect your back from misalignment.