The moments before a squat deserve as much consistency as the repetitions themselves. Rack height, safety equipment, stance, and how you approach the bar all affect the experience. Rehearse these details with manageable resistance. A familiar sequence makes it easier to notice when something has changed instead of discovering the problem after the set begins.
Follow the rack's instructions and learn to position its safety features correctly with qualified guidance. Check that attachments are secure and the surrounding floor is clear. Choose a setup appropriate for your body and the variation you are practicing. There is no benefit in copying a particular stance simply because another lifter uses it successfully.
Walk through the approach, unracking, and return before progressing to demanding work. Keep attention on a small number of useful cues rather than trying to recite a complicated checklist during every repetition. If balance or comfort is uncertain, reduce the demand and ask for help. A crowded room is not a reason to hurry a setup you do not understand.
Write down the rack settings and observations that made the movement more repeatable. The next session should begin with those details available. Progress can include becoming more organized and controlled, not only adding plates. A reliable setup creates a clearer starting point for whatever appropriate training progression you and your coach choose to follow.