I have said it here and many other places that “squatting is the life blood of Olympic lifting.” As your squat goes so do your lifts.
I should be clear, the primary part of your program should consist of the competition movements or a variation, probably 60% or more of your total reps, but the remainder of the program will be a lot of squats, with just a small amount being pulls of some sort and pressing.
A certain level of technical competence is required for the “squat more, lift more” motto to be in effect. For me this is seen when my lifters have been in a few competitions, but in general after an athlete has been in the gym for a year or more. We have to remember that lifting is a skill and that skill has to be learned well for strength to carryover to the platform.