Yes, but "improper movement patterns" is a very broad term/subject.
Every individual movement pattern has specific muscular activation patterns which make up proper form. So, I can't really give you any "global"/generalized advice on how to fix all movement patterns other than to simply practice and try to develop proper form (which may involve lowering the weight on the bar for the time being until this is achieved and then slowly increasing the weight as you are able to).
In the case of the squat, you leaning towards one side could mean:
-one leg is significantly stronger than the other and you are thus shifting the weight more to that side to allow you to lift more weight
-one leg is shorter than the other one and you need some orthotics to even out your hips/leg lengths
-your core is weak and is not capable of properly stabilizing your spine and hips and thus you are collapsing towards one side
-you have some sort of neural impairment happening on your left side (like a pinched nerve or bulging disk) that you are unaware of and this is causing your left side to lag behind
Since the leg strength discrepancy and core strength dificiency are the two likely options (along with going too heavy for your current strength levels) that are most easily remedied and under your control I would try working on those first.
A couple good exercise option would be:
Bulgarian Split Squats to strengthen each leg individually
Suitcase Deadlifts to teach your body to stabilize the hips, spine and shoulders while utilizing the legs
There are other options as well, those are just 2 good ones off the top of my head. Hope this helps.